{"id":96537,"date":"2018-10-23T23:00:08","date_gmt":"2018-10-23T21:00:08","guid":{"rendered":"https:\/\/www.cined.com\/?p=96537"},"modified":"2023-05-08T11:18:59","modified_gmt":"2023-05-08T09:18:59","slug":"the-cinema5d-camera-lab-is-back-dynamic-range-tests","status":"publish","type":"post","link":"https:\/\/staging.cined.dev\/jp\/the-cinema5d-camera-lab-is-back-dynamic-range-tests\/","title":{"rendered":"cinema5D\u30ab\u30e1\u30e9\u30c6\u30b9\u30c8\u30e9\u30dc \uff0d \u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u30c6\u30b9\u30c8\u306e\u65b9\u6cd5\u306b\u3064\u3044\u3066"},"content":{"rendered":"

cinema5D Lab\u3067\u306f\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3001\u30b7\u30e3\u30fc\u30d7\u30cd\u30b9\u3001\u30ed\u30fc\u30ea\u30f3\u30b0\u30b7\u30e3\u30c3\u30bf\u30fc\u306a\u3069\u306e\u8a73\u7d30\u306a\u30ab\u30e1\u30e9\u30c6\u30b9\u30c8\u3092\u884c\u3063\u3066\u3044\u308b\u3002\u3053\u306e\u30c6\u30b9\u30c8\u306b\u3064\u3044\u3066\u3001\u65b9\u6cd5\u3084\u8003\u3048\u65b9\u3092\u5404\u9805\u76ee\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u305f\u3044\u3002<\/strong><\/p>\n

\u6700\u521d\u306e\u9805\u76ee\u3068\u3057\u3066\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6e2c\u5b9a\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3088\u3046\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3084\u30c6\u30b9\u30c8\u306e\u8003\u3048\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u8aad\u8005\u306e\u53c2\u8003\u8cc7\u6599\u3068\u3057\u3066\u5f79\u7acb\u3066\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u308b\u3002<\/p>\n

\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6e2c\u5b9a<\/strong><\/h3>\n

\u7b46\u8005\u306e\u77e5\u308b\u9650\u308a\u3067\u306f\u3001\u30d3\u30c7\u30aa\u30ab\u30e1\u30e9\u3067\u306e\u696d\u754c\u6a19\u6e96\u306f\u5b58\u5728\u305b\u305a\u3001\u6700\u3082\u5358\u7d14\u306a\u5b9a\u7fa9\u3067\u3055\u3048\u6f20\u7136\u3068\u3057\u305f\u3082\u306e\u3060\u3002\uff08\u30c7\u30b8\u30bf\u30eb\u30b9\u30c6\u30a3\u30eb\u30ab\u30e1\u30e9\u3067\u306fISO 15739\uff1a2003\u898f\u683c\u304c\u3042\u308b\uff09<\/p>\n

\u5404\u30ab\u30e1\u30e9\u30e1\u30fc\u30ab\u30fc\u306f\u72ec\u81ea\u3067\u6e2c\u5b9a\u3057\u3001\u516c\u8868\u3057\u3066\u3044\u308b\u304c\uff08\u3042\u308b\u3044\u306f\u975e\u516c\u8868\uff09\u3001\u3053\u308c\u3089\u306f\u76f4\u63a5\u6bd4\u8f03\u3067\u304d\u308b\u6570\u5b57\u3067\u306f\u306a\u3044\u3002<\/p>\n

\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u8981\u7d20\u3067\u3042\u308b\u305f\u3081\u3001cinema5D Lab\u306e\u76ee\u6a19\u306f\u3001\u5e02\u8ca9\u3055\u308c\u3066\u3044\u308b\u30ab\u30e1\u30e9\u3092\u76f4\u63a5\u6bd4\u8f03\u3067\u304d\u308b\u72ec\u7acb\u3057\u305f\u57fa\u6e96\u3092\u78ba\u7acb\u3059\u308b\u3053\u3068\u3068\u8003\u3048\u3066\u3044\u308b\u3002<\/p>\n

\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306f\uff1f<\/strong><\/h3>\n

\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u3001\u30ab\u30e1\u30e9\u304c\u64ae\u5f71\u3067\u304d\u308b\u6700\u5927\u8f1d\u5ea6\u3068\u6700\u5c0f\u8f1d\u5ea6\u306e\u6bd4\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n

\u3068\u308a\u3042\u3048\u305a\u5206\u304b\u3063\u305f\u3088\u3046\u306a\u6c17\u306b\u306a\u308b\u304c\u3001\u3053\u308c\u3092\u3069\u306e\u3088\u3046\u306b\u6570\u91cf\u5316\u3059\u308b\u306e\u3060\u308d\u3046\u304b\uff1f<\/p>\n

\u660e\u308b\u3044\u90e8\u5206\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u3092\u64ae\u50cf\u3059\u308b\u30ab\u30e1\u30e9\u306e\u80fd\u529b\u306f\u306f\u3063\u304d\u308a\u3057\u3066\u3044\u308b\u304c\u3001\u30b7\u30e3\u30c9\u30a6\u90e8\u306b\u95a2\u3057\u3066\u304c\u554f\u984c\u3060\u3002\u6697\u90e8\u3067\u306f\u30ce\u30a4\u30ba\u304c\u6025\u901f\u306b\u767a\u751f\u3057\u3001\u3069\u306e\u7a0b\u5ea6\u306e\u30ce\u30a4\u30ba\u306a\u3089\u8a31\u5bb9\u7bc4\u56f2\u304b\u3068\u3044\u3046\u898b\u89e3\u304c\u7570\u306a\u308b\u3002\u3053\u3053\u3067\u306f\u3001\u30bb\u30f3\u30b5\u30fc\u30ce\u30a4\u30ba\u3068SNR\uff08Signal to Noise Ratio\uff09\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3002<\/p>\n

\u30ce\u30a4\u30ba\u306f\u3001\u30d4\u30af\u30bb\u30eb\u306e\u8f1d\u5ea6\u306e\u5b9f\u969b\u306e\u8f1d\u5ea6\u5024\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u5909\u52d5\u3060\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7279\u5b9a\u306e\u30d9\u30fc\u30b9\u8f1d\u5ea6\u4ee5\u4e0b\u3067\u306f\u3001\u753b\u50cf\u304c\u30ce\u30a4\u30ba\u306b\u57cb\u3082\u308c\u3066\u3057\u307e\u3044\u3001\u6697\u3044\u90e8\u5206\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u304c\u6b63\u78ba\u306b\u64ae\u5f71\u3055\u308c\u3066\u3044\u308b\u3068\u306f\u8a00\u3048\u306a\u3044\u3002<\/p>\n

ISO 15739\uff1a2003\u898f\u683c\u306f\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd41\u3092\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u6e2c\u5b9a\u306e\u3057\u304d\u3044\u5024\u3068\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u3001\u4e00\u5b9a\u306e\u6307\u91dd\u306b\u306f\u306a\u308b\u3002\u3057\u304b\u3057\u3001\u7d4c\u9a13\u306b\u3088\u308c\u3070\u3001\u30d3\u30c7\u30aa\u30ab\u30e1\u30e9\u306e\u5834\u5408\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd42\uff08\u307e\u305f\u306f\u96d1\u97f3\u306e\u4e8c\u4e57\u5e73\u5747\u5e73\u65b9\u6839\u5024RMS = 0.5 = 1 \/ SNR\uff09\u3067\u3082\u300c\u4f7f\u7528\u53ef\u80fd\u306a\u300d\u30ec\u30d9\u30eb\u3068\u8a00\u308f\u308c\u3066\u3044\u308b\u3002<\/p>\n

ARRI\u304c\u516c\u8868\u3057\u3066\u3044\u308bALEXA\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\uff0814\u30b9\u30c8\u30c3\u30d7\uff09\u306f\u30010.5 = 1 \/ SNR \u306b\u57fa\u3065\u3044\u305fcinema5D\u306e\u4ee5\u524d\u306e\u8a08\u6e2c\u7d50\u679c\u3068\u8fd1\u3044\u3082\u306e\u306a\u306e\u3067\u3001\u3053\u306e\u3057\u304d\u3044\u5024\u3092\u5f15\u304d\u7d9a\u304d\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3059\u308b\u3002<\/p>\n

\u30c6\u30b9\u30c8\u624b\u9806<\/strong><\/h3>\n

cinema5D\u3067\u306f\u3001\u6697\u5ba4\u3067DSC lab\u306eXyla 21\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u900f\u904e\u30c1\u30e3\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u3053\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u7bc4\u56f2\u306f21stop\u3060\u3002<\/p>\n

\"\"<\/a><\/p>\n

\u3053\u306e\u30c1\u30e3\u30fc\u30c8\u306f\u30ec\u30f3\u30ba\u306e\u30d5\u30ec\u30a2\u3092\u907f\u3051\u308b\u305f\u3081\u6c34\u5e73\u8ef8\u304b\u3089\u30aa\u30d5\u30bb\u30f3\u30bf\u30fc\u3055\u308c\u3066\u304a\u308a\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6e2c\u5b9a\u3059\u308b\u3002<\/p>\n

\u30cf\u30a4\u30e9\u30a4\u30c8\u306e\u5de6\u7aef\u3067\u306f\u3001\u6700\u521d\u306e2\u3064\u306e\u67a0\u3092\u30cf\u30fc\u30c9\u30af\u30ea\u30c3\u30d7\u3057\u30012\u756a\u76ee\u306e\u67a0\u304c\u30af\u30ea\u30c3\u30d4\u30f3\u30b0\u306e\u5148\u7aef\u306b\u6765\u308b\u3068\u3053\u308d\u3067\u505c\u6b62\u3059\u308b\u3002<\/p>\n

\u6b21\u306b\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3092\u7279\u5b9a\u3059\u308b2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308b\u3002<\/p>\n

a\uff09\u6ce2\u5f62\u30d7\u30ed\u30c3\u30c8\u304a\u3088\u3073\u8a18\u9332\u3055\u308c\u305f\u30d1\u30fc\u30c8\u306e\u753b\u50cf\u306e\u76ee\u8996\u691c\u67fb<\/p>\n

b\uff09IMATEST\u30bd\u30d5\u30c8\u30a6\u30a8\u30a2\u306e\u4f7f\u7528\uff1a\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30d5\u30ec\u30fc\u30e0\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3057\u3001\u9ad8\u5ea6\u306a\u753b\u50cf\u89e3\u6790\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08http:\/\/www.imatest.com\/docs\/stepchart\/\u3092\u53c2\u7167\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6570\u5024\u3092\u8a08\u7b97\u3059\u308bIMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u5b9f\u884c\u3002<\/p>\n

\u900f\u904e\u30c6\u30b9\u30c8\u306f\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u6b63\u78ba\u306a\u30c6\u30b9\u30c8\u3060\u304c\u3001\u305d\u306e\u7bc4\u56f2\u3067\u306e\u30ab\u30e1\u30e9\u306e\u30ab\u30e9\u30fc\u3068\u30c7\u30a3\u30c6\u30fc\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u306f\u307b\u3068\u3093\u3069\u7121\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305d\u308c\u306f\u3001\u30ab\u30e1\u30e9\u306b\u3064\u3044\u3066\u306e\u5224\u65ad\u3092\u4e0b\u30591\u3064\u306e\u60c5\u5831\u306b\u3059\u304e\u306a\u3044\u3002<\/p>\n

\u76ee\u8996\u691c\u67fb\u3068IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/strong><\/h3>\n

\u6700\u521d\u306e\u67a0\u304c\u30af\u30ea\u30c3\u30d7\u3055\u308c\u3066\u3082\u30012\u756a\u76ee\u306e\u67a0\u306f\u7bc4\u56f2\u5185\u306b\u3042\u308b\u305f\u3081\u3001\u3053\u306e2\u756a\u76ee\u306e\u67a0\u304b\u3089\u8996\u899a\u7684\u306b\u6570\u3048\u59cb\u3081\u308b\u3002\u67a02\u304b\u3089\u67a03\u304c\u6700\u521d\u306estop\u3001\u67a03\u304b\u3089\u67a04\u3078\u304c2\u756a\u76ee\u306estop\u3068\u3044\u3063\u305f\u5177\u5408\u3060\u3002\u3053\u3053\u307e\u3067\u306f\u3088\u3044\u3060\u308d\u3046\u304b\u3002<\/p>\n

\u30b7\u30e3\u30c9\u30fc\u7aef\u3067\u306f\u3001\u30ce\u30a4\u30ba\u9762\u304b\u3089\u51fa\u3066\u3044\u308b\u6700\u5f8c\u306e\u8b58\u5225\u53ef\u80fd\u306astop\u307e\u3067\u3092\u6570\u3048\u308b\u304c\u3001\u3053\u306e\u76ee\u8996\u306f\u96e3\u3057\u3044\u3002<\/p>\n

\u4e0b\u8a18\u306e\u56f32\u306e\u30bd\u30cb\u30fcFS7\uff08\u5185\u90e8SLOG3 10bit\u30928bit\u306b\u30b9\u30b1\u30fc\u30eb\u3055\u308c\u305f\u5024\uff09\u3092\u53c2\u7167\u3044\u305f\u3060\u304d\u305f\u3044\u3002\u3053\u308c\u306f\u3001\u904e\u53bb\u306e\u6e2c\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3001\u4ed6\u306e\u30ab\u30e1\u30e9\u3092\u542b\u3081\u518d\u5ea6\u30c6\u30b9\u30c8\u3057\u305f\u3082\u306e\u3060\u3002<\/p>\n

\u30ce\u30a4\u30ba\u306f\u898b\u3084\u3059\u3044\u3088\u3046\u8d64\u8272\u306e\u7dda\u3067\u793a\u3055\u308c\u3066\u304a\u308a\u3001\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u4ee5\u4e0a\u306e\u8b58\u5225\u53ef\u80fd\u306a\u67a0\u3092\u6570\u3048\u308b\u3068\u3001\u7d0412stop\u3001\u3042\u308b\u3044\u306f\u3082\u3046\u5c11\u3057\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308b\u3002<\/p>\n

\"\"<\/a>

Fig. 2: Sony FS7 SLOG3 step chart waveform plot (from Premiere Pro). Cleary discernible is the noise floor (indicated by the red line). Every patch clearly sticking out from the noise floor is a \u201eusable\u201c stop, giving us about 12 stops range.<\/p><\/div>\n

\u305f\u3060\u3001\u8996\u899a\u7684\u306a\u65b9\u6cd5\u306b\u306f\u3001\u4f8b\u3048\u3070\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u306e\u4f4d\u7f6e\u3092\u542b\u3081\u3001\u3044\u304f\u3064\u304b\u306e\u66d6\u6627\u3055\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u5bfe\u3057\u3001IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u975e\u5e38\u306b\u4fbf\u5229\u3060\u3002IMATEST\u3092\u4f7f\u7528\u3057\u305f\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n

\u7de8\u96c6\u30b7\u30b9\u30c6\u30e0\u306e\u5f71\u97ff\u3092\u907f\u3051\u308b\u305f\u3081\u3001FFMPEG\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3001\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u76f4\u63a5\u9ad8\u54c1\u8cea\u306eI\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3059\u308b\u3002<\/p>\n

ffmpeg -i videofile.mov -vf “select = eq\uff08pict_type \\\u3001I\uff09” -vsync vfr framegrab\uff0504d.tiff<\/p>\n

\u3053\u308c\u3089\u306e\u9ad8\u54c1\u8cea\u306eTIFF\u30d5\u30a1\u30a4\u30eb\u306fIMATEST\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3055\u308c\u3001\u9818\u57df\u304c\u9078\u629e\u3055\u308c\u308b\u3002<\/p>\n

\"\"<\/a>

Fig. 3: patch image from the video file, selection of region of interest in IMATEST<\/p><\/div>\n

MATEST\u306f\u9ad8\u5ea6\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u3063\u3066\u5404\u67a0\u3092\u5206\u6790\u3057\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3092\u8a08\u7b97\u3057\u3001\u4e0b\u306e\u30c1\u30e3\u30fc\u30c8\u306e\u3088\u3046\u306b\u3001\u5e7e\u3064\u304b\u306eSNR\u5024\u306b\u5bfe\u3059\u308b\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3092\u8868\u793a\u3059\u308b\u3002<\/p>\n

\"\"<\/a>

Fig. 4: IMATEST Result plot for the Sony FS7<\/p><\/div>\n

\u30bd\u30cb\u30fcFS7\u306e\u5834\u5408\u3001IMATEST\u306f1 \/ SNR = 0.5\u306e\u5834\u540812.1stop\u3001SNR\u5024\u304c1\u306e\u5834\u5408\u306f13stop\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306a\u3063\u3066\u3044\u308b\u3002\u307e\u305f\u300117.7\u500b\u306e\u8b58\u5225\u53ef\u80fd\u306a\u67a0\u3092\u7279\u5b9a\u3057\u305f\u3002cinema5D\u3067\u306fFS7\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u3001UHD\uff083840\u00d72160\uff09\u306712.1stop\u3068\u3057\u3066\u3044\u308b\u3002<\/p>\n

\u30a4\u30e1\u30fc\u30b8\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0<\/strong><\/h3>\n

\u30a4\u30e1\u30fc\u30b8\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306b\u95a2\u3057\u3066\u306f\u3001FS7\u306e\u6620\u50cf\u3092UHD\u304b\u3089\u30d5\u30ebHD\uff081920\u00d71080\uff09\u306b\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30eb\u3059\u308b\u3068\u3001\u7d040.3stop\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u304c\u62e1\u5927\u3055\u308c\u300112.4stop\u306b\u306a\u308b\u3002\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306f\u30014\u3064\u306eUHD\u30d4\u30af\u30bb\u30eb\u30921\u3064\u306eFHD\u30d4\u30af\u30bb\u30eb\u306b\u5e73\u5747\u5316\u3059\u308b\u305f\u3081\u3001\u30ce\u30a4\u30ba\u304c\u4f4e\u6e1b\u3059\u308b\u3002 4K\u3067\u64ae\u3063\u3066FHD\u3067\u4ed5\u4e0a\u3052\u308b\u5834\u5408\u306e\u30e1\u30ea\u30c3\u30c8\u3067\u3082\u3042\u308b\u3002<\/p>\n

\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3068\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u95a2\u4fc2\u306b\u95a2\u3057\u3066\u306f\u3001\u96a3\u63a5\u3059\u308b4\u3064\u306e\u30d4\u30af\u30bb\u30eb\u306e\u4fe1\u53f7\u5024\u306f\u9ad8\u3044\u76f8\u95a2\u5ea6\uff08\u8f1d\u5ea6\u306f\u307b\u307c\u540c\u3058\uff09\u3092\u6301\u3064\u304c\u3001\u4e00\u822c\u7684\u306b\u30ce\u30a4\u30ba\u306f\u30e9\u30f3\u30c0\u30e0\u306a\u306e\u3067\u76f8\u95a2\u306f\u7121\u3044\u306f\u305a\u3060\u3002<\/p>\n

\u3055\u3066\u30013840\u00d72160\u306e4\u3064\u306e\u30d4\u30af\u30bb\u30eb\u30921920\u00d71080\u306e1\u30d4\u30af\u30bb\u30eb\u306b\u7d71\u5408\uff08\u307e\u305f\u306f\u5e73\u5747\u5316\uff09\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4fe1\u53f7\u5024\u306f\u307b\u307c\u540c\u3058\u30ec\u30d9\u30eb\u306b\u7559\u307e\u308b\u306f\u305a\u3060\u304c\u3001\u30ce\u30a4\u30ba\u306f\u7121\u76f8\u95a2\u306a\u306e\u3067\u30ce\u30a4\u30ba\u5024\u306f\u6e1b\u5c11\u3059\u308b\u3002\u6570\u5b66\u7684\u306b\u306f\u5e73\u65b9\u6839\u306e\u9006\u6570\u500d\u306b\u306a\u308b\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u30014\u753b\u7d20\u30921\u753b\u7d20\u306b\u7d71\u5408\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u306f2\u500d\uff08\u221a4=2\uff09\u306b\u306a\u308b\u3002\u8f1d\u5ea6\u304c\u4e00\u5b9a\u306e\u5834\u5408\u3001\u3088\u308a\u9ad8\u3044\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3067\u3042\u308c\u3070\u3001\u3088\u308a\u9ad8\u3044\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306a\u308b\u3002<\/p>\n

\u306a\u304a\u3001cinema5D\u3067\u306e\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306f\u7de8\u96c6\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5f71\u97ff\u3092\u907f\u3051\u308b\u305f\u3081\u3001ffmpeg\u30e9\u30a4\u30d6\u30e9\u30ea\uff08libswscale\uff09\u3092\u4f7f\u3063\u3066\u884c\u308f\u308c\u308b\u3002<\/p>\n

IMATEST\u304c\u512a\u308c\u3066\u3044\u308b\u70b9\u306f\u3001\u5206\u6790\u304c\u4e3b\u89b3\u7684\u306a\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u7d14\u7c8b\u306a\u6570\u5b66\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u3060\u3002\u307e\u305f\u3001\u5404\u67a0\u304c\u306f\u3063\u304d\u308a\u3068\u64ae\u5f71\u3055\u308c\u3066\u304a\u308c\u3070\u3001\u30b9\u30c6\u30c3\u30d7\u30c1\u30e3\u30fc\u30c8\u3092\u30a2\u30f3\u30c0\u30fc\/\u30aa\u30fc\u30d0\u30fc\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001IMATEST\u306f\u6570\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u8aa4\u5dee\u3067\u540c\u3058\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002cinema5D\u3067\u306f\u3001\u3053\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u30bd\u30cb\u30fc FS7\u3001\u03b17SII\u3001Blackmagic Pocket Cinema Camera\u3001GH5\u3001GH5s\u3001FUJI X-T2 \/ X\u306a\u3069\u306e\u591a\u304f\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3044\u3001\u3059\u3079\u3066\u904e\u53bb\u306e\u7d50\u679c\u3068\u5408\u81f4\u3059\u308b\u3053\u3068\u3092\u78ba\u304b\u3081\u305f\u3002<\/p>\n

\u7d50\u679c\u3092\u8a18\u3057\u305f\u8868\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002\uff08ARRI ALEXA\u306e\u5024\u306f\u904e\u53bb\u306e\u30c6\u30b9\u30c8\u306e\u5024\u3067\u3001\u53c2\u8003\u5024\uff09\u3002<\/p>\n

\"\"<\/a>

Fig. 5: table of recent testing results (exception: ALEXA values for reference from past cinema5d  testing). The value in bold on the right side of the table is the cinema5d dynamic range rating.<\/p><\/div>\n

             <\/span><\/p>\n

\u5404\u30e1\u30fc\u30ab\u30fc\u306f\u304a\u305d\u3089\u304f\u3001\u3088\u308a\u53b3\u5bc6\u306aISO15739\uff1a2003 SNR = 1\u5b9a\u7fa9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3060\u308d\u3046\u3002\u4e0a\u8a18\u306e\u7d50\u679c\u304b\u3089\u5206\u304b\u308b\u3088\u3046\u306b\u3001\u6700\u9ad8\u89e3\u50cf\u5ea6\u3067\u306e\u3053\u306e\u5b9a\u7fa9\u3067\u306f\u3001\u30d1\u30ca\u30bd\u30cb\u30c3\u30afGH5\u306f12stop\u3001Blackmagic Pocket Cinema Camera\u306f12.5stop\u3068\u306a\u308b\u3002<\/p>\n

\u306a\u304a\u3001\u8a18\u4e8b\u306e\u5192\u982d\u3067\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u5b9a\u7fa9\u306f\u3001\u30ab\u30e1\u30e9\u304c\u64ae\u5f71\u3067\u304d\u308b\u6700\u5927\u8f1d\u5ea6\u3068\u6700\u5c0f\u8f1d\u5ea6\u306e\u6bd4\u3068\u8a18\u3057\u305f\u3002IMATEST\u306f\u8b58\u5225\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u67a0\u306e\u6700\u5927\u6570\u3067\u3042\u308b\u300c\u67a0\u7bc4\u56f2\u300d\u5024\u3082\u51fa\u529b\u3059\u308b\u3002\uff08\u56f35\u306b\u306f\u793a\u3055\u308c\u3066\u3044\u306a\u3044\uff09\u3002\u4f8b\u3048\u3070\u3001GH5s\u306e\u5024\u306f\u7d0414.7\u306e\u691c\u51fa\u67a0\u3067\u3001FS7\u306f17.7\u3060\uff08\u56f34\u53c2\u7167\uff09\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u5024\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30ce\u30a4\u30ba\u3057\u304d\u3044\u5024\u3082\u8868\u8a18\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u610f\u5473\u3092\u306a\u3059\u3053\u3068\u3082\u77e5\u3063\u3066\u304a\u3044\u3066\u6b32\u3057\u3044\u3002<\/p>\n

\u6700\u5f8c\u306b\u3001IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5ba2\u89b3\u7684\u306a\u7d50\u679c\u3082\u76f8\u5bfe\u5024\u306b\u306a\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u3044\u305f\u3060\u304d\u305f\u3044\u3002 \u9ad8\u5ea6\u306a\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u5099\u3048\u305f\u4e00\u90e8\u306e\u30ab\u30e1\u30e9\u3067\u306f\u3001\u9ad8\u5ea6\u306a\u30dd\u30b9\u30c8\u30d7\u30ed\u30bb\u30c3\u30b7\u30f3\u30b0\u3067\u30ce\u30a4\u30ba\u304b\u3089\u6620\u50cf\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u3092\u5206\u96e2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u5f93\u3063\u3066\u3001\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u5024\u3060\u3051\u306b\u3053\u3060\u308f\u308b\u306e\u3082\u6b63\u3057\u3044\u5224\u65ad\u3067\u306f\u306a\u3044\u3002\u7d50\u5c40\u306f\u3001\u30ab\u30e1\u30e9\u3092\u4f7f\u3046\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308b\u3068\u3053\u308d\u3082\u5927\u304d\u3044\u306e\u3060\u3002<\/p>\n

\u6211\u3005\u306fcinema5D Lab\u306e\u60c5\u5831\u304c\u8aad\u8005\u306e\u53c2\u8003\u306b\u306a\u308b\u3053\u3068\u3092\u9858\u3063\u3066\u304a\u308a\u3001\u3053\u308c\u304b\u3089\u3082\u30ab\u30e1\u30e9\u30ec\u30d3\u30e5\u30fc\u3067\u7a4d\u6975\u7684\u306bLab\u3092\u4f7f\u3063\u3066\u3044\u304d\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u3002<\/p>\n<96537-main-buylinks\/>","protected":false,"clean_render":"

cinema5D Lab\u3067\u306f\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3001\u30b7\u30e3\u30fc\u30d7\u30cd\u30b9\u3001\u30ed\u30fc\u30ea\u30f3\u30b0\u30b7\u30e3\u30c3\u30bf\u30fc\u306a\u3069\u306e\u8a73\u7d30\u306a\u30ab\u30e1\u30e9\u30c6\u30b9\u30c8\u3092\u884c\u3063\u3066\u3044\u308b\u3002\u3053\u306e\u30c6\u30b9\u30c8\u306b\u3064\u3044\u3066\u3001\u65b9\u6cd5\u3084\u8003\u3048\u65b9\u3092\u5404\u9805\u76ee\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u305f\u3044\u3002<\/strong><\/p>\n

\u6700\u521d\u306e\u9805\u76ee\u3068\u3057\u3066\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6e2c\u5b9a\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3088\u3046\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3084\u30c6\u30b9\u30c8\u306e\u8003\u3048\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u8aad\u8005\u306e\u53c2\u8003\u8cc7\u6599\u3068\u3057\u3066\u5f79\u7acb\u3066\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u308b\u3002<\/p>\n

\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6e2c\u5b9a<\/strong><\/h3>\n

\u7b46\u8005\u306e\u77e5\u308b\u9650\u308a\u3067\u306f\u3001\u30d3\u30c7\u30aa\u30ab\u30e1\u30e9\u3067\u306e\u696d\u754c\u6a19\u6e96\u306f\u5b58\u5728\u305b\u305a\u3001\u6700\u3082\u5358\u7d14\u306a\u5b9a\u7fa9\u3067\u3055\u3048\u6f20\u7136\u3068\u3057\u305f\u3082\u306e\u3060\u3002\uff08\u30c7\u30b8\u30bf\u30eb\u30b9\u30c6\u30a3\u30eb\u30ab\u30e1\u30e9\u3067\u306fISO 15739\uff1a2003\u898f\u683c\u304c\u3042\u308b\uff09<\/p>\n

\u5404\u30ab\u30e1\u30e9\u30e1\u30fc\u30ab\u30fc\u306f\u72ec\u81ea\u3067\u6e2c\u5b9a\u3057\u3001\u516c\u8868\u3057\u3066\u3044\u308b\u304c\uff08\u3042\u308b\u3044\u306f\u975e\u516c\u8868\uff09\u3001\u3053\u308c\u3089\u306f\u76f4\u63a5\u6bd4\u8f03\u3067\u304d\u308b\u6570\u5b57\u3067\u306f\u306a\u3044\u3002<\/p>\n

\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u8981\u7d20\u3067\u3042\u308b\u305f\u3081\u3001cinema5D Lab\u306e\u76ee\u6a19\u306f\u3001\u5e02\u8ca9\u3055\u308c\u3066\u3044\u308b\u30ab\u30e1\u30e9\u3092\u76f4\u63a5\u6bd4\u8f03\u3067\u304d\u308b\u72ec\u7acb\u3057\u305f\u57fa\u6e96\u3092\u78ba\u7acb\u3059\u308b\u3053\u3068\u3068\u8003\u3048\u3066\u3044\u308b\u3002<\/p>\n

\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306f\uff1f<\/strong><\/h3>\n

\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u3001\u30ab\u30e1\u30e9\u304c\u64ae\u5f71\u3067\u304d\u308b\u6700\u5927\u8f1d\u5ea6\u3068\u6700\u5c0f\u8f1d\u5ea6\u306e\u6bd4\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n

\u3068\u308a\u3042\u3048\u305a\u5206\u304b\u3063\u305f\u3088\u3046\u306a\u6c17\u306b\u306a\u308b\u304c\u3001\u3053\u308c\u3092\u3069\u306e\u3088\u3046\u306b\u6570\u91cf\u5316\u3059\u308b\u306e\u3060\u308d\u3046\u304b\uff1f<\/p>\n

\u660e\u308b\u3044\u90e8\u5206\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u3092\u64ae\u50cf\u3059\u308b\u30ab\u30e1\u30e9\u306e\u80fd\u529b\u306f\u306f\u3063\u304d\u308a\u3057\u3066\u3044\u308b\u304c\u3001\u30b7\u30e3\u30c9\u30a6\u90e8\u306b\u95a2\u3057\u3066\u304c\u554f\u984c\u3060\u3002\u6697\u90e8\u3067\u306f\u30ce\u30a4\u30ba\u304c\u6025\u901f\u306b\u767a\u751f\u3057\u3001\u3069\u306e\u7a0b\u5ea6\u306e\u30ce\u30a4\u30ba\u306a\u3089\u8a31\u5bb9\u7bc4\u56f2\u304b\u3068\u3044\u3046\u898b\u89e3\u304c\u7570\u306a\u308b\u3002\u3053\u3053\u3067\u306f\u3001\u30bb\u30f3\u30b5\u30fc\u30ce\u30a4\u30ba\u3068SNR\uff08Signal to Noise Ratio\uff09\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3002<\/p>\n

\u30ce\u30a4\u30ba\u306f\u3001\u30d4\u30af\u30bb\u30eb\u306e\u8f1d\u5ea6\u306e\u5b9f\u969b\u306e\u8f1d\u5ea6\u5024\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u5909\u52d5\u3060\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7279\u5b9a\u306e\u30d9\u30fc\u30b9\u8f1d\u5ea6\u4ee5\u4e0b\u3067\u306f\u3001\u753b\u50cf\u304c\u30ce\u30a4\u30ba\u306b\u57cb\u3082\u308c\u3066\u3057\u307e\u3044\u3001\u6697\u3044\u90e8\u5206\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u304c\u6b63\u78ba\u306b\u64ae\u5f71\u3055\u308c\u3066\u3044\u308b\u3068\u306f\u8a00\u3048\u306a\u3044\u3002<\/p>\n

ISO 15739\uff1a2003\u898f\u683c\u306f\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd41\u3092\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u6e2c\u5b9a\u306e\u3057\u304d\u3044\u5024\u3068\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u3001\u4e00\u5b9a\u306e\u6307\u91dd\u306b\u306f\u306a\u308b\u3002\u3057\u304b\u3057\u3001\u7d4c\u9a13\u306b\u3088\u308c\u3070\u3001\u30d3\u30c7\u30aa\u30ab\u30e1\u30e9\u306e\u5834\u5408\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd42\uff08\u307e\u305f\u306f\u96d1\u97f3\u306e\u4e8c\u4e57\u5e73\u5747\u5e73\u65b9\u6839\u5024RMS = 0.5 = 1 \/ SNR\uff09\u3067\u3082\u300c\u4f7f\u7528\u53ef\u80fd\u306a\u300d\u30ec\u30d9\u30eb\u3068\u8a00\u308f\u308c\u3066\u3044\u308b\u3002<\/p>\n

ARRI\u304c\u516c\u8868\u3057\u3066\u3044\u308bALEXA\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\uff0814\u30b9\u30c8\u30c3\u30d7\uff09\u306f\u30010.5 = 1 \/ SNR \u306b\u57fa\u3065\u3044\u305fcinema5D\u306e\u4ee5\u524d\u306e\u8a08\u6e2c\u7d50\u679c\u3068\u8fd1\u3044\u3082\u306e\u306a\u306e\u3067\u3001\u3053\u306e\u3057\u304d\u3044\u5024\u3092\u5f15\u304d\u7d9a\u304d\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3059\u308b\u3002<\/p>\n

\u30c6\u30b9\u30c8\u624b\u9806<\/strong><\/h3>\n

cinema5D\u3067\u306f\u3001\u6697\u5ba4\u3067DSC lab\u306eXyla 21\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u900f\u904e\u30c1\u30e3\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u3053\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u7bc4\u56f2\u306f21stop\u3060\u3002<\/p>\n

\"\"<\/a><\/p>\n

\u3053\u306e\u30c1\u30e3\u30fc\u30c8\u306f\u30ec\u30f3\u30ba\u306e\u30d5\u30ec\u30a2\u3092\u907f\u3051\u308b\u305f\u3081\u6c34\u5e73\u8ef8\u304b\u3089\u30aa\u30d5\u30bb\u30f3\u30bf\u30fc\u3055\u308c\u3066\u304a\u308a\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6e2c\u5b9a\u3059\u308b\u3002<\/p>\n

\u30cf\u30a4\u30e9\u30a4\u30c8\u306e\u5de6\u7aef\u3067\u306f\u3001\u6700\u521d\u306e2\u3064\u306e\u67a0\u3092\u30cf\u30fc\u30c9\u30af\u30ea\u30c3\u30d7\u3057\u30012\u756a\u76ee\u306e\u67a0\u304c\u30af\u30ea\u30c3\u30d4\u30f3\u30b0\u306e\u5148\u7aef\u306b\u6765\u308b\u3068\u3053\u308d\u3067\u505c\u6b62\u3059\u308b\u3002<\/p>\n

\u6b21\u306b\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3092\u7279\u5b9a\u3059\u308b2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308b\u3002<\/p>\n

a\uff09\u6ce2\u5f62\u30d7\u30ed\u30c3\u30c8\u304a\u3088\u3073\u8a18\u9332\u3055\u308c\u305f\u30d1\u30fc\u30c8\u306e\u753b\u50cf\u306e\u76ee\u8996\u691c\u67fb<\/p>\n

b\uff09IMATEST\u30bd\u30d5\u30c8\u30a6\u30a8\u30a2\u306e\u4f7f\u7528\uff1a\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30d5\u30ec\u30fc\u30e0\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3057\u3001\u9ad8\u5ea6\u306a\u753b\u50cf\u89e3\u6790\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08http:\/\/www.imatest.com\/docs\/stepchart\/\u3092\u53c2\u7167\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6570\u5024\u3092\u8a08\u7b97\u3059\u308bIMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u5b9f\u884c\u3002<\/p>\n

\u900f\u904e\u30c6\u30b9\u30c8\u306f\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u6b63\u78ba\u306a\u30c6\u30b9\u30c8\u3060\u304c\u3001\u305d\u306e\u7bc4\u56f2\u3067\u306e\u30ab\u30e1\u30e9\u306e\u30ab\u30e9\u30fc\u3068\u30c7\u30a3\u30c6\u30fc\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u306f\u307b\u3068\u3093\u3069\u7121\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305d\u308c\u306f\u3001\u30ab\u30e1\u30e9\u306b\u3064\u3044\u3066\u306e\u5224\u65ad\u3092\u4e0b\u30591\u3064\u306e\u60c5\u5831\u306b\u3059\u304e\u306a\u3044\u3002<\/p>\n

\u76ee\u8996\u691c\u67fb\u3068IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/strong><\/h3>\n

\u6700\u521d\u306e\u67a0\u304c\u30af\u30ea\u30c3\u30d7\u3055\u308c\u3066\u3082\u30012\u756a\u76ee\u306e\u67a0\u306f\u7bc4\u56f2\u5185\u306b\u3042\u308b\u305f\u3081\u3001\u3053\u306e2\u756a\u76ee\u306e\u67a0\u304b\u3089\u8996\u899a\u7684\u306b\u6570\u3048\u59cb\u3081\u308b\u3002\u67a02\u304b\u3089\u67a03\u304c\u6700\u521d\u306estop\u3001\u67a03\u304b\u3089\u67a04\u3078\u304c2\u756a\u76ee\u306estop\u3068\u3044\u3063\u305f\u5177\u5408\u3060\u3002\u3053\u3053\u307e\u3067\u306f\u3088\u3044\u3060\u308d\u3046\u304b\u3002<\/p>\n

\u30b7\u30e3\u30c9\u30fc\u7aef\u3067\u306f\u3001\u30ce\u30a4\u30ba\u9762\u304b\u3089\u51fa\u3066\u3044\u308b\u6700\u5f8c\u306e\u8b58\u5225\u53ef\u80fd\u306astop\u307e\u3067\u3092\u6570\u3048\u308b\u304c\u3001\u3053\u306e\u76ee\u8996\u306f\u96e3\u3057\u3044\u3002<\/p>\n

\u4e0b\u8a18\u306e\u56f32\u306e\u30bd\u30cb\u30fcFS7\uff08\u5185\u90e8SLOG3 10bit\u30928bit\u306b\u30b9\u30b1\u30fc\u30eb\u3055\u308c\u305f\u5024\uff09\u3092\u53c2\u7167\u3044\u305f\u3060\u304d\u305f\u3044\u3002\u3053\u308c\u306f\u3001\u904e\u53bb\u306e\u6e2c\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3001\u4ed6\u306e\u30ab\u30e1\u30e9\u3092\u542b\u3081\u518d\u5ea6\u30c6\u30b9\u30c8\u3057\u305f\u3082\u306e\u3060\u3002<\/p>\n

\u30ce\u30a4\u30ba\u306f\u898b\u3084\u3059\u3044\u3088\u3046\u8d64\u8272\u306e\u7dda\u3067\u793a\u3055\u308c\u3066\u304a\u308a\u3001\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u4ee5\u4e0a\u306e\u8b58\u5225\u53ef\u80fd\u306a\u67a0\u3092\u6570\u3048\u308b\u3068\u3001\u7d0412stop\u3001\u3042\u308b\u3044\u306f\u3082\u3046\u5c11\u3057\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308b\u3002<\/p>\n

\"\"<\/a>

Fig. 2: Sony FS7 SLOG3 step chart waveform plot (from Premiere Pro). Cleary discernible is the noise floor (indicated by the red line). Every patch clearly sticking out from the noise floor is a \u201eusable\u201c stop, giving us about 12 stops range.<\/p><\/div>\n

\u305f\u3060\u3001\u8996\u899a\u7684\u306a\u65b9\u6cd5\u306b\u306f\u3001\u4f8b\u3048\u3070\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u306e\u4f4d\u7f6e\u3092\u542b\u3081\u3001\u3044\u304f\u3064\u304b\u306e\u66d6\u6627\u3055\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u5bfe\u3057\u3001IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u975e\u5e38\u306b\u4fbf\u5229\u3060\u3002IMATEST\u3092\u4f7f\u7528\u3057\u305f\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n

\u7de8\u96c6\u30b7\u30b9\u30c6\u30e0\u306e\u5f71\u97ff\u3092\u907f\u3051\u308b\u305f\u3081\u3001FFMPEG\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3001\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u76f4\u63a5\u9ad8\u54c1\u8cea\u306eI\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3059\u308b\u3002<\/p>\n

ffmpeg -i videofile.mov -vf “select = eq\uff08pict_type \\\u3001I\uff09” -vsync vfr framegrab\uff0504d.tiff<\/p>\n

\u3053\u308c\u3089\u306e\u9ad8\u54c1\u8cea\u306eTIFF\u30d5\u30a1\u30a4\u30eb\u306fIMATEST\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3055\u308c\u3001\u9818\u57df\u304c\u9078\u629e\u3055\u308c\u308b\u3002<\/p>\n

\"\"<\/a>

Fig. 3: patch image from the video file, selection of region of interest in IMATEST<\/p><\/div>\n

MATEST\u306f\u9ad8\u5ea6\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u3063\u3066\u5404\u67a0\u3092\u5206\u6790\u3057\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3092\u8a08\u7b97\u3057\u3001\u4e0b\u306e\u30c1\u30e3\u30fc\u30c8\u306e\u3088\u3046\u306b\u3001\u5e7e\u3064\u304b\u306eSNR\u5024\u306b\u5bfe\u3059\u308b\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3092\u8868\u793a\u3059\u308b\u3002<\/p>\n

\"\"<\/a>

Fig. 4: IMATEST Result plot for the Sony FS7<\/p><\/div>\n

\u30bd\u30cb\u30fcFS7\u306e\u5834\u5408\u3001IMATEST\u306f1 \/ SNR = 0.5\u306e\u5834\u540812.1stop\u3001SNR\u5024\u304c1\u306e\u5834\u5408\u306f13stop\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306a\u3063\u3066\u3044\u308b\u3002\u307e\u305f\u300117.7\u500b\u306e\u8b58\u5225\u53ef\u80fd\u306a\u67a0\u3092\u7279\u5b9a\u3057\u305f\u3002cinema5D\u3067\u306fFS7\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u3001UHD\uff083840\u00d72160\uff09\u306712.1stop\u3068\u3057\u3066\u3044\u308b\u3002<\/p>\n

\u30a4\u30e1\u30fc\u30b8\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0<\/strong><\/h3>\n

\u30a4\u30e1\u30fc\u30b8\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306b\u95a2\u3057\u3066\u306f\u3001FS7\u306e\u6620\u50cf\u3092UHD\u304b\u3089\u30d5\u30ebHD\uff081920\u00d71080\uff09\u306b\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30eb\u3059\u308b\u3068\u3001\u7d040.3stop\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u304c\u62e1\u5927\u3055\u308c\u300112.4stop\u306b\u306a\u308b\u3002\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306f\u30014\u3064\u306eUHD\u30d4\u30af\u30bb\u30eb\u30921\u3064\u306eFHD\u30d4\u30af\u30bb\u30eb\u306b\u5e73\u5747\u5316\u3059\u308b\u305f\u3081\u3001\u30ce\u30a4\u30ba\u304c\u4f4e\u6e1b\u3059\u308b\u3002 4K\u3067\u64ae\u3063\u3066FHD\u3067\u4ed5\u4e0a\u3052\u308b\u5834\u5408\u306e\u30e1\u30ea\u30c3\u30c8\u3067\u3082\u3042\u308b\u3002<\/p>\n

\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3068\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u95a2\u4fc2\u306b\u95a2\u3057\u3066\u306f\u3001\u96a3\u63a5\u3059\u308b4\u3064\u306e\u30d4\u30af\u30bb\u30eb\u306e\u4fe1\u53f7\u5024\u306f\u9ad8\u3044\u76f8\u95a2\u5ea6\uff08\u8f1d\u5ea6\u306f\u307b\u307c\u540c\u3058\uff09\u3092\u6301\u3064\u304c\u3001\u4e00\u822c\u7684\u306b\u30ce\u30a4\u30ba\u306f\u30e9\u30f3\u30c0\u30e0\u306a\u306e\u3067\u76f8\u95a2\u306f\u7121\u3044\u306f\u305a\u3060\u3002<\/p>\n

\u3055\u3066\u30013840\u00d72160\u306e4\u3064\u306e\u30d4\u30af\u30bb\u30eb\u30921920\u00d71080\u306e1\u30d4\u30af\u30bb\u30eb\u306b\u7d71\u5408\uff08\u307e\u305f\u306f\u5e73\u5747\u5316\uff09\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4fe1\u53f7\u5024\u306f\u307b\u307c\u540c\u3058\u30ec\u30d9\u30eb\u306b\u7559\u307e\u308b\u306f\u305a\u3060\u304c\u3001\u30ce\u30a4\u30ba\u306f\u7121\u76f8\u95a2\u306a\u306e\u3067\u30ce\u30a4\u30ba\u5024\u306f\u6e1b\u5c11\u3059\u308b\u3002\u6570\u5b66\u7684\u306b\u306f\u5e73\u65b9\u6839\u306e\u9006\u6570\u500d\u306b\u306a\u308b\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u30014\u753b\u7d20\u30921\u753b\u7d20\u306b\u7d71\u5408\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u306f2\u500d\uff08\u221a4=2\uff09\u306b\u306a\u308b\u3002\u8f1d\u5ea6\u304c\u4e00\u5b9a\u306e\u5834\u5408\u3001\u3088\u308a\u9ad8\u3044\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3067\u3042\u308c\u3070\u3001\u3088\u308a\u9ad8\u3044\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306a\u308b\u3002<\/p>\n

\u306a\u304a\u3001cinema5D\u3067\u306e\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306f\u7de8\u96c6\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5f71\u97ff\u3092\u907f\u3051\u308b\u305f\u3081\u3001ffmpeg\u30e9\u30a4\u30d6\u30e9\u30ea\uff08libswscale\uff09\u3092\u4f7f\u3063\u3066\u884c\u308f\u308c\u308b\u3002<\/p>\n

IMATEST\u304c\u512a\u308c\u3066\u3044\u308b\u70b9\u306f\u3001\u5206\u6790\u304c\u4e3b\u89b3\u7684\u306a\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u7d14\u7c8b\u306a\u6570\u5b66\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u3060\u3002\u307e\u305f\u3001\u5404\u67a0\u304c\u306f\u3063\u304d\u308a\u3068\u64ae\u5f71\u3055\u308c\u3066\u304a\u308c\u3070\u3001\u30b9\u30c6\u30c3\u30d7\u30c1\u30e3\u30fc\u30c8\u3092\u30a2\u30f3\u30c0\u30fc\/\u30aa\u30fc\u30d0\u30fc\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001IMATEST\u306f\u6570\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u8aa4\u5dee\u3067\u540c\u3058\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002cinema5D\u3067\u306f\u3001\u3053\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u30bd\u30cb\u30fc FS7\u3001\u03b17SII\u3001Blackmagic Pocket Cinema Camera\u3001GH5\u3001GH5s\u3001FUJI X-T2 \/ X\u306a\u3069\u306e\u591a\u304f\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3044\u3001\u3059\u3079\u3066\u904e\u53bb\u306e\u7d50\u679c\u3068\u5408\u81f4\u3059\u308b\u3053\u3068\u3092\u78ba\u304b\u3081\u305f\u3002<\/p>\n

\u7d50\u679c\u3092\u8a18\u3057\u305f\u8868\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002\uff08ARRI ALEXA\u306e\u5024\u306f\u904e\u53bb\u306e\u30c6\u30b9\u30c8\u306e\u5024\u3067\u3001\u53c2\u8003\u5024\uff09\u3002<\/p>\n

\"\"<\/a>

Fig. 5: table of recent testing results (exception: ALEXA values for reference from past cinema5d  testing). The value in bold on the right side of the table is the cinema5d dynamic range rating.<\/p><\/div>\n

             <\/span><\/p>\n

\u5404\u30e1\u30fc\u30ab\u30fc\u306f\u304a\u305d\u3089\u304f\u3001\u3088\u308a\u53b3\u5bc6\u306aISO15739\uff1a2003 SNR = 1\u5b9a\u7fa9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3060\u308d\u3046\u3002\u4e0a\u8a18\u306e\u7d50\u679c\u304b\u3089\u5206\u304b\u308b\u3088\u3046\u306b\u3001\u6700\u9ad8\u89e3\u50cf\u5ea6\u3067\u306e\u3053\u306e\u5b9a\u7fa9\u3067\u306f\u3001\u30d1\u30ca\u30bd\u30cb\u30c3\u30afGH5\u306f12stop\u3001Blackmagic Pocket Cinema Camera\u306f12.5stop\u3068\u306a\u308b\u3002<\/p>\n

\u306a\u304a\u3001\u8a18\u4e8b\u306e\u5192\u982d\u3067\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u5b9a\u7fa9\u306f\u3001\u30ab\u30e1\u30e9\u304c\u64ae\u5f71\u3067\u304d\u308b\u6700\u5927\u8f1d\u5ea6\u3068\u6700\u5c0f\u8f1d\u5ea6\u306e\u6bd4\u3068\u8a18\u3057\u305f\u3002IMATEST\u306f\u8b58\u5225\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u67a0\u306e\u6700\u5927\u6570\u3067\u3042\u308b\u300c\u67a0\u7bc4\u56f2\u300d\u5024\u3082\u51fa\u529b\u3059\u308b\u3002\uff08\u56f35\u306b\u306f\u793a\u3055\u308c\u3066\u3044\u306a\u3044\uff09\u3002\u4f8b\u3048\u3070\u3001GH5s\u306e\u5024\u306f\u7d0414.7\u306e\u691c\u51fa\u67a0\u3067\u3001FS7\u306f17.7\u3060\uff08\u56f34\u53c2\u7167\uff09\u3002<\/p>\n

\u3057\u305f\u304c\u3063\u3066\u3001\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u5024\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30ce\u30a4\u30ba\u3057\u304d\u3044\u5024\u3082\u8868\u8a18\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u610f\u5473\u3092\u306a\u3059\u3053\u3068\u3082\u77e5\u3063\u3066\u304a\u3044\u3066\u6b32\u3057\u3044\u3002<\/p>\n

\u6700\u5f8c\u306b\u3001IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5ba2\u89b3\u7684\u306a\u7d50\u679c\u3082\u76f8\u5bfe\u5024\u306b\u306a\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3067\u3044\u305f\u3060\u304d\u305f\u3044\u3002 \u9ad8\u5ea6\u306a\u30b3\u30fc\u30c7\u30c3\u30af\u3092\u5099\u3048\u305f\u4e00\u90e8\u306e\u30ab\u30e1\u30e9\u3067\u306f\u3001\u9ad8\u5ea6\u306a\u30dd\u30b9\u30c8\u30d7\u30ed\u30bb\u30c3\u30b7\u30f3\u30b0\u3067\u30ce\u30a4\u30ba\u304b\u3089\u6620\u50cf\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u3092\u5206\u96e2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u5f93\u3063\u3066\u3001\u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u5024\u3060\u3051\u306b\u3053\u3060\u308f\u308b\u306e\u3082\u6b63\u3057\u3044\u5224\u65ad\u3067\u306f\u306a\u3044\u3002\u7d50\u5c40\u306f\u3001\u30ab\u30e1\u30e9\u3092\u4f7f\u3046\u30e6\u30fc\u30b6\u30fc\u306b\u3088\u308b\u3068\u3053\u308d\u3082\u5927\u304d\u3044\u306e\u3060\u3002<\/p>\n

\u6211\u3005\u306fcinema5D Lab\u306e\u60c5\u5831\u304c\u8aad\u8005\u306e\u53c2\u8003\u306b\u306a\u308b\u3053\u3068\u3092\u9858\u3063\u3066\u304a\u308a\u3001\u3053\u308c\u304b\u3089\u3082\u30ab\u30e1\u30e9\u30ec\u30d3\u30e5\u30fc\u3067\u7a4d\u6975\u7684\u306bLab\u3092\u4f7f\u3063\u3066\u3044\u304d\u305f\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u3002<\/p>\n<96537-main-buylinks\/>"},"excerpt":{"rendered":"

cinema5D Lab\u3067\u306f\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3001\u30b7\u30e3\u30fc\u30d7\u30cd\u30b9\u3001\u30ed\u30fc\u30ea\u30f3\u30b0\u30b7\u30e3\u30c3\u30bf\u30fc\u306a\u3069\u306e\u8a73\u7d30\u306a\u30ab\u30e1\u30e9\u30c6\u30b9\u30c8\u3092\u884c\u3063\u3066\u3044\u308b\u3002\u3053\u306e\u30c6\u30b9\u30c8\u306b\u3064\u3044\u3066\u3001\u65b9\u6cd5\u3084\u8003\u3048\u65b9\u3092\u5404\u9805\u76ee\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u305f\u3044\u3002 \u6700\u521d\u306e\u9805\u76ee\u3068\u3057\u3066\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6e2c\u5b9a\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3088\u3046\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u3084\u30c6\u30b9\u30c8\u306e\u8003\u3048\u65b9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u3001\u8aad\u8005\u306e\u53c2\u8003\u8cc7\u6599\u3068\u3057\u3066\u5f79\u7acb\u3066\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u308b\u3002 \u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6e2c\u5b9a \u7b46\u8005\u306e\u77e5\u308b\u9650\u308a\u3067\u306f\u3001\u30d3\u30c7\u30aa\u30ab\u30e1\u30e9\u3067\u306e\u696d\u754c\u6a19\u6e96\u306f\u5b58\u5728\u305b\u305a\u3001\u6700\u3082\u5358\u7d14\u306a\u5b9a\u7fa9\u3067\u3055\u3048\u6f20\u7136\u3068\u3057\u305f\u3082\u306e\u3060\u3002\uff08\u30c7\u30b8\u30bf\u30eb\u30b9\u30c6\u30a3\u30eb\u30ab\u30e1\u30e9\u3067\u306fISO 15739\uff1a2003\u898f\u683c\u304c\u3042\u308b\uff09 \u5404\u30ab\u30e1\u30e9\u30e1\u30fc\u30ab\u30fc\u306f\u72ec\u81ea\u3067\u6e2c\u5b9a\u3057\u3001\u516c\u8868\u3057\u3066\u3044\u308b\u304c\uff08\u3042\u308b\u3044\u306f\u975e\u516c\u8868\uff09\u3001\u3053\u308c\u3089\u306f\u76f4\u63a5\u6bd4\u8f03\u3067\u304d\u308b\u6570\u5b57\u3067\u306f\u306a\u3044\u3002 \u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u8981\u7d20\u3067\u3042\u308b\u305f\u3081\u3001cinema5D Lab\u306e\u76ee\u6a19\u306f\u3001\u5e02\u8ca9\u3055\u308c\u3066\u3044\u308b\u30ab\u30e1\u30e9\u3092\u76f4\u63a5\u6bd4\u8f03\u3067\u304d\u308b\u72ec\u7acb\u3057\u305f\u57fa\u6e96\u3092\u78ba\u7acb\u3059\u308b\u3053\u3068\u3068\u8003\u3048\u3066\u3044\u308b\u3002 \u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306f\uff1f \u30ab\u30e1\u30e9\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u3001\u30ab\u30e1\u30e9\u304c\u64ae\u5f71\u3067\u304d\u308b\u6700\u5927\u8f1d\u5ea6\u3068\u6700\u5c0f\u8f1d\u5ea6\u306e\u6bd4\u3068\u3057\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u3068\u308a\u3042\u3048\u305a\u5206\u304b\u3063\u305f\u3088\u3046\u306a\u6c17\u306b\u306a\u308b\u304c\u3001\u3053\u308c\u3092\u3069\u306e\u3088\u3046\u306b\u6570\u91cf\u5316\u3059\u308b\u306e\u3060\u308d\u3046\u304b\uff1f \u660e\u308b\u3044\u90e8\u5206\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u3092\u64ae\u50cf\u3059\u308b\u30ab\u30e1\u30e9\u306e\u80fd\u529b\u306f\u306f\u3063\u304d\u308a\u3057\u3066\u3044\u308b\u304c\u3001\u30b7\u30e3\u30c9\u30a6\u90e8\u306b\u95a2\u3057\u3066\u304c\u554f\u984c\u3060\u3002\u6697\u90e8\u3067\u306f\u30ce\u30a4\u30ba\u304c\u6025\u901f\u306b\u767a\u751f\u3057\u3001\u3069\u306e\u7a0b\u5ea6\u306e\u30ce\u30a4\u30ba\u306a\u3089\u8a31\u5bb9\u7bc4\u56f2\u304b\u3068\u3044\u3046\u898b\u89e3\u304c\u7570\u306a\u308b\u3002\u3053\u3053\u3067\u306f\u3001\u30bb\u30f3\u30b5\u30fc\u30ce\u30a4\u30ba\u3068SNR\uff08Signal to Noise Ratio\uff09\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3002 \u30ce\u30a4\u30ba\u306f\u3001\u30d4\u30af\u30bb\u30eb\u306e\u8f1d\u5ea6\u306e\u5b9f\u969b\u306e\u8f1d\u5ea6\u5024\u3068\u6bd4\u8f03\u3057\u3066\u3001\u30e9\u30f3\u30c0\u30e0\u306a\u5909\u52d5\u3060\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u7279\u5b9a\u306e\u30d9\u30fc\u30b9\u8f1d\u5ea6\u4ee5\u4e0b\u3067\u306f\u3001\u753b\u50cf\u304c\u30ce\u30a4\u30ba\u306b\u57cb\u3082\u308c\u3066\u3057\u307e\u3044\u3001\u6697\u3044\u90e8\u5206\u306e\u30c7\u30a3\u30c6\u30fc\u30eb\u304c\u6b63\u78ba\u306b\u64ae\u5f71\u3055\u308c\u3066\u3044\u308b\u3068\u306f\u8a00\u3048\u306a\u3044\u3002 ISO 15739\uff1a2003\u898f\u683c\u306f\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd41\u3092\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u6e2c\u5b9a\u306e\u3057\u304d\u3044\u5024\u3068\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u3001\u4e00\u5b9a\u306e\u6307\u91dd\u306b\u306f\u306a\u308b\u3002\u3057\u304b\u3057\u3001\u7d4c\u9a13\u306b\u3088\u308c\u3070\u3001\u30d3\u30c7\u30aa\u30ab\u30e1\u30e9\u306e\u5834\u5408\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd42\uff08\u307e\u305f\u306f\u96d1\u97f3\u306e\u4e8c\u4e57\u5e73\u5747\u5e73\u65b9\u6839\u5024RMS = 0.5 = 1 \/ SNR\uff09\u3067\u3082\u300c\u4f7f\u7528\u53ef\u80fd\u306a\u300d\u30ec\u30d9\u30eb\u3068\u8a00\u308f\u308c\u3066\u3044\u308b\u3002 ARRI\u304c\u516c\u8868\u3057\u3066\u3044\u308bALEXA\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\uff0814\u30b9\u30c8\u30c3\u30d7\uff09\u306f\u30010.5 = 1 \/ SNR \u306b\u57fa\u3065\u3044\u305fcinema5D\u306e\u4ee5\u524d\u306e\u8a08\u6e2c\u7d50\u679c\u3068\u8fd1\u3044\u3082\u306e\u306a\u306e\u3067\u3001\u3053\u306e\u3057\u304d\u3044\u5024\u3092\u5f15\u304d\u7d9a\u304d\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3059\u308b\u3002 \u30c6\u30b9\u30c8\u624b\u9806 cinema5D\u3067\u306f\u3001\u6697\u5ba4\u3067DSC lab\u306eXyla 21\u30d0\u30c3\u30af\u30e9\u30a4\u30c8\u900f\u904e\u30c1\u30e3\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u3001\u3053\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u7bc4\u56f2\u306f21stop\u3060\u3002 \u3053\u306e\u30c1\u30e3\u30fc\u30c8\u306f\u30ec\u30f3\u30ba\u306e\u30d5\u30ec\u30a2\u3092\u907f\u3051\u308b\u305f\u3081\u6c34\u5e73\u8ef8\u304b\u3089\u30aa\u30d5\u30bb\u30f3\u30bf\u30fc\u3055\u308c\u3066\u304a\u308a\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u6e2c\u5b9a\u3059\u308b\u3002 \u30cf\u30a4\u30e9\u30a4\u30c8\u306e\u5de6\u7aef\u3067\u306f\u3001\u6700\u521d\u306e2\u3064\u306e\u67a0\u3092\u30cf\u30fc\u30c9\u30af\u30ea\u30c3\u30d7\u3057\u30012\u756a\u76ee\u306e\u67a0\u304c\u30af\u30ea\u30c3\u30d4\u30f3\u30b0\u306e\u5148\u7aef\u306b\u6765\u308b\u3068\u3053\u308d\u3067\u505c\u6b62\u3059\u308b\u3002 \u6b21\u306b\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3092\u7279\u5b9a\u3059\u308b2\u3064\u306e\u65b9\u6cd5\u304c\u3042\u308b\u3002 a\uff09\u6ce2\u5f62\u30d7\u30ed\u30c3\u30c8\u304a\u3088\u3073\u8a18\u9332\u3055\u308c\u305f\u30d1\u30fc\u30c8\u306e\u753b\u50cf\u306e\u76ee\u8996\u691c\u67fb b\uff09IMATEST\u30bd\u30d5\u30c8\u30a6\u30a8\u30a2\u306e\u4f7f\u7528\uff1a\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30d5\u30ec\u30fc\u30e0\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3057\u3001\u9ad8\u5ea6\u306a\u753b\u50cf\u89e3\u6790\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\uff08http:\/\/www.imatest.com\/docs\/stepchart\/\u3092\u53c2\u7167\uff09\u3092\u4f7f\u7528\u3057\u3066\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6570\u5024\u3092\u8a08\u7b97\u3059\u308bIMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u5b9f\u884c\u3002 \u900f\u904e\u30c6\u30b9\u30c8\u306f\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u6b63\u78ba\u306a\u30c6\u30b9\u30c8\u3060\u304c\u3001\u305d\u306e\u7bc4\u56f2\u3067\u306e\u30ab\u30e1\u30e9\u306e\u30ab\u30e9\u30fc\u3068\u30c7\u30a3\u30c6\u30fc\u30eb\u306b\u95a2\u3059\u308b\u60c5\u5831\u306f\u307b\u3068\u3093\u3069\u7121\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u305d\u308c\u306f\u3001\u30ab\u30e1\u30e9\u306b\u3064\u3044\u3066\u306e\u5224\u65ad\u3092\u4e0b\u30591\u3064\u306e\u60c5\u5831\u306b\u3059\u304e\u306a\u3044\u3002 \u76ee\u8996\u691c\u67fb\u3068IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u6700\u521d\u306e\u67a0\u304c\u30af\u30ea\u30c3\u30d7\u3055\u308c\u3066\u3082\u30012\u756a\u76ee\u306e\u67a0\u306f\u7bc4\u56f2\u5185\u306b\u3042\u308b\u305f\u3081\u3001\u3053\u306e2\u756a\u76ee\u306e\u67a0\u304b\u3089\u8996\u899a\u7684\u306b\u6570\u3048\u59cb\u3081\u308b\u3002\u67a02\u304b\u3089\u67a03\u304c\u6700\u521d\u306estop\u3001\u67a03\u304b\u3089\u67a04\u3078\u304c2\u756a\u76ee\u306estop\u3068\u3044\u3063\u305f\u5177\u5408\u3060\u3002\u3053\u3053\u307e\u3067\u306f\u3088\u3044\u3060\u308d\u3046\u304b\u3002 \u30b7\u30e3\u30c9\u30fc\u7aef\u3067\u306f\u3001\u30ce\u30a4\u30ba\u9762\u304b\u3089\u51fa\u3066\u3044\u308b\u6700\u5f8c\u306e\u8b58\u5225\u53ef\u80fd\u306astop\u307e\u3067\u3092\u6570\u3048\u308b\u304c\u3001\u3053\u306e\u76ee\u8996\u306f\u96e3\u3057\u3044\u3002 \u4e0b\u8a18\u306e\u56f32\u306e\u30bd\u30cb\u30fcFS7\uff08\u5185\u90e8SLOG3 10bit\u30928bit\u306b\u30b9\u30b1\u30fc\u30eb\u3055\u308c\u305f\u5024\uff09\u3092\u53c2\u7167\u3044\u305f\u3060\u304d\u305f\u3044\u3002\u3053\u308c\u306f\u3001\u904e\u53bb\u306e\u6e2c\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3001\u4ed6\u306e\u30ab\u30e1\u30e9\u3092\u542b\u3081\u518d\u5ea6\u30c6\u30b9\u30c8\u3057\u305f\u3082\u306e\u3060\u3002 \u30ce\u30a4\u30ba\u306f\u898b\u3084\u3059\u3044\u3088\u3046\u8d64\u8272\u306e\u7dda\u3067\u793a\u3055\u308c\u3066\u304a\u308a\u3001\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u4ee5\u4e0a\u306e\u8b58\u5225\u53ef\u80fd\u306a\u67a0\u3092\u6570\u3048\u308b\u3068\u3001\u7d0412stop\u3001\u3042\u308b\u3044\u306f\u3082\u3046\u5c11\u3057\u3042\u308b\u3053\u3068\u304c\u5206\u304b\u308b\u3002 \u305f\u3060\u3001\u8996\u899a\u7684\u306a\u65b9\u6cd5\u306b\u306f\u3001\u4f8b\u3048\u3070\u30ce\u30a4\u30ba\u30ec\u30d9\u30eb\u306e\u4f4d\u7f6e\u3092\u542b\u3081\u3001\u3044\u304f\u3064\u304b\u306e\u66d6\u6627\u3055\u304c\u3042\u308b\u3002\u3053\u308c\u306b\u5bfe\u3057\u3001IMATEST\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306f\u975e\u5e38\u306b\u4fbf\u5229\u3060\u3002IMATEST\u3092\u4f7f\u7528\u3057\u305f\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002 \u7de8\u96c6\u30b7\u30b9\u30c6\u30e0\u306e\u5f71\u97ff\u3092\u907f\u3051\u308b\u305f\u3081\u3001FFMPEG\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3001\u30d3\u30c7\u30aa\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u76f4\u63a5\u9ad8\u54c1\u8cea\u306eI\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3059\u308b\u3002 ffmpeg -i videofile.mov -vf “select = eq\uff08pict_type \\\u3001I\uff09” -vsync vfr framegrab\uff0504d.tiff \u3053\u308c\u3089\u306e\u9ad8\u54c1\u8cea\u306eTIFF\u30d5\u30a1\u30a4\u30eb\u306fIMATEST\u306b\u30a4\u30f3\u30dd\u30fc\u30c8\u3055\u308c\u3001\u9818\u57df\u304c\u9078\u629e\u3055\u308c\u308b\u3002 MATEST\u306f\u9ad8\u5ea6\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u3063\u3066\u5404\u67a0\u3092\u5206\u6790\u3057\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3092\u8a08\u7b97\u3057\u3001\u4e0b\u306e\u30c1\u30e3\u30fc\u30c8\u306e\u3088\u3046\u306b\u3001\u5e7e\u3064\u304b\u306eSNR\u5024\u306b\u5bfe\u3059\u308b\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3092\u8868\u793a\u3059\u308b\u3002 \u30bd\u30cb\u30fcFS7\u306e\u5834\u5408\u3001IMATEST\u306f1 \/ SNR = 0.5\u306e\u5834\u540812.1stop\u3001SNR\u5024\u304c1\u306e\u5834\u5408\u306f13stop\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306a\u3063\u3066\u3044\u308b\u3002\u307e\u305f\u300117.7\u500b\u306e\u8b58\u5225\u53ef\u80fd\u306a\u67a0\u3092\u7279\u5b9a\u3057\u305f\u3002cinema5D\u3067\u306fFS7\u306e\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306f\u3001UHD\uff083840\u00d72160\uff09\u306712.1stop\u3068\u3057\u3066\u3044\u308b\u3002 \u30a4\u30e1\u30fc\u30b8\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0 \u30a4\u30e1\u30fc\u30b8\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306b\u95a2\u3057\u3066\u306f\u3001FS7\u306e\u6620\u50cf\u3092UHD\u304b\u3089\u30d5\u30ebHD\uff081920\u00d71080\uff09\u306b\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30eb\u3059\u308b\u3068\u3001\u7d040.3stop\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u304c\u62e1\u5927\u3055\u308c\u300112.4stop\u306b\u306a\u308b\u3002\u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306f\u30014\u3064\u306eUHD\u30d4\u30af\u30bb\u30eb\u30921\u3064\u306eFHD\u30d4\u30af\u30bb\u30eb\u306b\u5e73\u5747\u5316\u3059\u308b\u305f\u3081\u3001\u30ce\u30a4\u30ba\u304c\u4f4e\u6e1b\u3059\u308b\u3002 4K\u3067\u64ae\u3063\u3066FHD\u3067\u4ed5\u4e0a\u3052\u308b\u5834\u5408\u306e\u30e1\u30ea\u30c3\u30c8\u3067\u3082\u3042\u308b\u3002 \u30c0\u30a6\u30f3\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3068\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u306e\u95a2\u4fc2\u306b\u95a2\u3057\u3066\u306f\u3001\u96a3\u63a5\u3059\u308b4\u3064\u306e\u30d4\u30af\u30bb\u30eb\u306e\u4fe1\u53f7\u5024\u306f\u9ad8\u3044\u76f8\u95a2\u5ea6\uff08\u8f1d\u5ea6\u306f\u307b\u307c\u540c\u3058\uff09\u3092\u6301\u3064\u304c\u3001\u4e00\u822c\u7684\u306b\u30ce\u30a4\u30ba\u306f\u30e9\u30f3\u30c0\u30e0\u306a\u306e\u3067\u76f8\u95a2\u306f\u7121\u3044\u306f\u305a\u3060\u3002 \u3055\u3066\u30013840\u00d72160\u306e4\u3064\u306e\u30d4\u30af\u30bb\u30eb\u30921920\u00d71080\u306e1\u30d4\u30af\u30bb\u30eb\u306b\u7d71\u5408\uff08\u307e\u305f\u306f\u5e73\u5747\u5316\uff09\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u4fe1\u53f7\u5024\u306f\u307b\u307c\u540c\u3058\u30ec\u30d9\u30eb\u306b\u7559\u307e\u308b\u306f\u305a\u3060\u304c\u3001\u30ce\u30a4\u30ba\u306f\u7121\u76f8\u95a2\u306a\u306e\u3067\u30ce\u30a4\u30ba\u5024\u306f\u6e1b\u5c11\u3059\u308b\u3002\u6570\u5b66\u7684\u306b\u306f\u5e73\u65b9\u6839\u306e\u9006\u6570\u500d\u306b\u306a\u308b\u3002 \u3057\u305f\u304c\u3063\u3066\u30014\u753b\u7d20\u30921\u753b\u7d20\u306b\u7d71\u5408\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u306f2\u500d\uff08\u221a4=2\uff09\u306b\u306a\u308b\u3002\u8f1d\u5ea6\u304c\u4e00\u5b9a\u306e\u5834\u5408\u3001\u3088\u308a\u9ad8\u3044\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\u3067\u3042\u308c\u3070\u3001\u3088\u308a\u9ad8\u3044\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ec\u30f3\u30b8\u3068\u306a\u308b\u3002 \u306a\u304a\u3001cinema5D\u3067\u306e\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u306f\u7de8\u96c6\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5f71\u97ff\u3092\u907f\u3051\u308b\u305f\u3081\u3001ffmpeg\u30e9\u30a4\u30d6\u30e9\u30ea\uff08libswscale\uff09\u3092\u4f7f\u3063\u3066\u884c\u308f\u308c\u308b\u3002 IMATEST\u304c\u512a\u308c\u3066\u3044\u308b\u70b9\u306f\u3001\u5206\u6790\u304c\u4e3b\u89b3\u7684\u306a\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u7d14\u7c8b\u306a\u6570\u5b66\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u3060\u3002\u307e\u305f\u3001\u5404\u67a0\u304c\u306f\u3063\u304d\u308a\u3068\u64ae\u5f71\u3055\u308c\u3066\u304a\u308c\u3070\u3001\u30b9\u30c6\u30c3\u30d7\u30c1\u30e3\u30fc\u30c8\u3092\u30a2\u30f3\u30c0\u30fc\/\u30aa\u30fc\u30d0\u30fc\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001IMATEST\u306f\u6570\u30d1\u30fc\u30bb\u30f3\u30c8\u306e\u8aa4\u5dee\u3067\u540c\u3058\u7d50\u679c\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002cinema5D\u3067\u306f\u3001\u3053\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3067\u30bd\u30cb\u30fc FS7\u3001\u03b17SII\u3001Blackmagic Pocket Cinema Camera\u3001GH5\u3001GH5s\u3001FUJI X-T2 \/ 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