We were able to monitor in both SDR and HDR at the same time. When you turn DTM off on that display, then it correctly hits 130 nits.įor the skin tone shoot, Sony provided an X300 and Colorfront provided the X310 with DIT cart. On a display with dynamic tone mapping enabled, the 130 nits is coming out ~200 nits, which is wrong. The lower left corner should be ~130 nits. On our new skin tone material we shot at the end of February, we also included a color checker chart next to each model. Also, we have found some displays with dynamic tone mapping are actually altering levels below their capability by boosting them.
Where tone mapping starts, those boxes will be off. On a 700 nit OLED, using static tone mapping, you may decide to start that roll off between 200-300 nits. If we targeted another gamma, then the surrounds would be different.įor HDR, this is more complicated because of tone mapping. The high and surrounding gray box will change depending on nit level. The outer surround / gray box is code value 720/721 (using dither) on the 50 nit box.Įach box works like that. If the 64 and 940 levels are altered or the gamma is not 2.4, then the checker will not blend to 720/721 and instead will blend to another value. If you average 0 and 100 nits you will get 50 nits or code value 720/721 on a display that has a gamma of 2.4. The single pixel checkers are at code value 64 (0 nits) and 940 (100 nits) for the 50 nit box. Looking at the SDR -> Color Space Eval Pattern. Some additional notes on how the single pixel stuff works.
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