Better comment than this video:
A big thing about ACES is that it is not only a tonemapper, but an entire workflow that addresses more concerns then mentioned in the video. The biggest benefit of ACES is that it supports any display type, including any current and future HDR format, and any input gamut. Admittedly, it sounds a bit like magic to me but supposedly, the Reference Rendering Transform (RRT), the component that is most responsible for the ACES look, makes the colors translate perceptually similar to any display type, sRGB, DCI-P3 or whatever else we might want in the future, given that the correct ODT is used after it. I am all for alternatives or improvements to the RRT but if I had to choose between classic ACES or a solution that looks better on sRGB but only looks good on sRGB, I'm going for ACES no doubt
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