Originally Posted by jwhn
Yes, the gamma settings are a bit of a pain with the 5040. I don't need the exact settings. Maybe if you just take a picture of the curve for now. My situation is different given the luminance I get so I won't really be able to use your settings. I just wanted to see if it gave me any ideas.
I'll take a picture next time I turn on the projector (prefer not to cycle it on/off in a short time). From what I remember, I maxed out control C8 and turned down C9. C1 was untouched at 0, the others at slightly positive values.
[EDIT: Picture of Gamma Settings attached
Any tips on using the Epson gamma settings with HCFR? I think I read once that you set it up to do real-time adjustments.
Once you've decided on a specific contrast setting, you can characterize the controls by running sweeps maxing out one control at a time while keeping all the others at default. I've posted the values previously, but that was for SDR.
An alternative for Epson projectors is to display a pattern and ask the projector to show you which control corresponds to that stimulus.
A few other questions:
- When you scale the curve in HCFR (nice trick by the way), it also scales down the 0%. Wouldn't you want to leave 0% and maybe 5% at the original target? I can't hit 0.01 in my room.
I requested zoyd to produce the curve for 300 nits peak and 8000:1 contrast ratio. The contrast ratio does not change when I scale down the values, so the black value after scaling is actually the right value I'm getting.
- I've just been experimenting for now to see if this approach actually produces a good result before spending too much time trying to get it precise. It seems as though it is going to work quite well. What is your opinion when looking at HDR content?
To be honest, it was really late last night when I finished so I did not even have any chance to watch real HDR content. However, as I mentioned previously, the default HDR1 curve was already very good with a diffuse white of 40 nits. This curve reduces the highlight clipping.
[EDIT: I watched X-Men Apocalypse and noticed some clipping of extreme highlight. Not sure if that movie was mastered on 4000 nits or 1000 nits display]
- Looks like Zoyd verified that Ryan is actually using 10-bit codes rounded to whole numbers. So if I am using his disk, your scaled file is accurate, right?