0027名無しさん┃】【┃Dolby
2018/11/28(水) 03:55:50.36ID:zPekg8hm0なんて言ったって、これが現実
BT.2408 "nominal recommendations"
TABLE 1 "Nominal signal levels for PQ and HLG production"
Reflectance Object or Reference Nominal Luminance,cd/m2 Nominal Signal Level
(Luminance Factor,%) (PQ & 1000cd/m2HLG) %PQ %HLG
Grey Card(18%) 26 38 38
Greyscale Chart Max(83%) 162 56 71
Greyscale Chart Max(90%) 179 57 73
Reference Level: HDR Reference White
(100%) also diffuse white and Graphics White 203 58 75
TABLE 2 "Preliminary signal levels for common objects in PQ and HLG production"
Reflectance Object Nominal Luminance cd/m2 Signal Level
(PQ & 1 000 cd/m 2 HLG) %PQ %HLG
Skin Tones Vary by region Vary by region
Grass 30-65 39-47 40-55
Ice Rink 155 55 71
White Objects 140-425 54-66 69-87