I've done more testing with the lastest curves and here is the latest:
- I've settled for a max brightness of 800nits. With my 135nits effective (low lamp, iris fully open, DI on auto2), this gives me the best compromise: decent native on/off (45000:1), excellent black levels (especially when the DI kicks in), best possible ANSI contrast, no fan noise. The picture is punchy and contrasty. I think I'll settle for that.
- At 800nits max brightness, black brightness had to be reduced. 0.02 is enough to resolve down to 0.005nits (black at level 77, resolving down to level 81). If I wanted to resolve down to level 64, I would only need 0.03.
- I have done more tests with actual content and I've now settled to resolving down to level 81 (black at 77). Better black floor in many titles, and no visible black crush in the others.
- It seems like 4000nits titles (all mastered to 0.005nits black) do not benefit as much from the better black floor as the titles mastered to 1000nits/0.005nits, such as Lucy. I tried a few dark 1000nits titles, including The Revenant (mastered to 0nits black), and I couldn't see any visible black crush resolving only to 0.005nits.
- I've tested the usual: The Shallows, Mad Max, Lucy, Pacific Rim, they all looked amazing, so I'm very happy with this new Unicurve. So to sum up my settings with the wip branch:
Max bright: 800nits
Ref white: 100nits
Black brightness: 0.02 (resolving down to 0.005nits/level 81 on my unit for black at level 77)
Soft clip start: auto (335 effective if you're not using wip yet))
Hard clip: 4000nits
Soft curve type: 0
Soft curve gamma: 1
This should work very well for anyone with around 130-140nits peak white (it doesn't matter if in low lamp or high lamp). Less than that, lower max brightness, more than that raise max brightness.
I'm done for this round of testing, I'm going to watch some movies over the next couple of weeks and I'll report back if there is anything worth reporting.
I attach the low-res version of the two curves I've been testing, but I haven't tried them in low-res. They should be imported by the JVC Autocal software, as all the previous curves. If the feedback is good, I'll link them to the first post of the JVC Autocal thread.
They are meant to be used with the JVC set to 0,0 and the player set to 0,0 as well.
The black levels might not be right for your unit, and the curve might be too bright or too dim for your setup. There is nothing I can do about that, but you can: use the wip branch of Arve's tool to create your own curve and do it right, or hire someone to do it