原來用下面個圖嚟校brightness 同 contrast 係會比用公式(100% IRE white x 0.0065 = 10%IRE white)更加客易得出Gamma 2.2
Panasonic DP-UB9000EBK, Shield TV Pro 2019, Apple TV 4K, Acurus Muse 16, PSI Audio A21-M x 5, A17-M x 2, Yamaha HS5 x 2, Arendal 1723 2S x 2, Procella P15A x 2, Epson EH-12000B, Grandview Screen