2021-02-12, 13:47
You don't lose the HDR by converting to SDR. A projector can't really do HDR, anyways. They aren't nearly bright enough.
With a projector, you are simply getting a gamma curve with a dynamic range that tops out at under 200 nits. Most projectors are likely internally converting to gamma already when an HDR video is played. SDR gamma curves can easily cover 200 nits of dynamic range without color banding. Good HDR needs more than 500 nits of peak brightness to have the specular highlights appear as intended. HDR on a projector is a really a myth and a misnomer.
If you like HDR passthrough more than tone mapping HDR to SDR, then I would simply stick with that. In the end, it is down to your preference.
With a projector, you are simply getting a gamma curve with a dynamic range that tops out at under 200 nits. Most projectors are likely internally converting to gamma already when an HDR video is played. SDR gamma curves can easily cover 200 nits of dynamic range without color banding. Good HDR needs more than 500 nits of peak brightness to have the specular highlights appear as intended. HDR on a projector is a really a myth and a misnomer.
If you like HDR passthrough more than tone mapping HDR to SDR, then I would simply stick with that. In the end, it is down to your preference.
