Originally Posted by hithere
Currently experimenting with the Harpervision HDR settings for my LS10000/Oppo-203. Oppo is set to HDR "forced", with output set to 4K 24p (as oppposed to source direct) 8-bit. I've tried on both Digital Cinema mode and Adobe RGB mode on the projector to keep the expanded gamut filter in place. Adobe RGB actually looks like a better, more detailed picture to me, to confirm what others are seeing.
It seems the response is highly dependent on source material. I don't have a light meter, but my gross/eyeball adjustments indicate that, for example, John Wick 2 requires contrast and saturation be set to the high levels Dave describes, if you are going for his pseudo-gamma-compensated settings for HDR. It was almost as if I were watching a video-level output with the projector set to 0-255 PC levels. Gamma was visibly off no matter what I did, giving me a washed out picture, climbing out of black way too quickly, and it was even worse at the upper end. However, my viewing of Pacific Rim using the same settings required very little if any adjustment for contrast and color saturation from default. Currently running with contrast at 0 and saturation at ~14 for that movie. Are different discs mastered to different anticipated gamma curves for playback? Pacific Rim, for my money, seems the better showcase of Dave's gamma compensation for pseudo-HDR, but not with the contrast/saturation jacked like he has.
Edit: To add some confusion, I do find that conserving the WCG info but abandoning Harpervision/HDR for John Wick/John Wick 2 is the better choice for those movies (I do this, I think, by selecting "strip metadata" instead of "forced" on the oppo...not noticing the red push from the older firmware as much). I find the gamma is still a bit off when I do this, but it is in the other direction...it crushes some black, but at least you end up with a really punchy picture/authoritative and slow rise out of black. With Dave's settings/passing HDR on the opening chase sequence of Wick 2, Wick is driving a nice inky black '70 Chevelle, and everything else is blown out/washed out. Also, the catacombs scene reveals some heinous banding in the bright working lights/dark tunnels that doesn't show up if I let the player convert to SDR first. Takes me right out of the movie, like suddenly he's on the evening news.
I feel spoiled every time I watch a bluray on this thing. Skyfall on this projector, for example...arouses me.
Sorry to hear you're having issues. Yes Gordon is right. Different discs have different levels they're mastered to. My reference UHD HDR disc for making those initial HarperVision settings was The Revenant and when I put other discs on I did notice that some needed some additional tweaking, like the contrast color and tint as you mention. What I did was save different memories and named them 1,000 nit HDR, 4,000 bit HDR, etc. if I recall.
This is why I stressed over and over again that these settings were just a baseline starting point of my concept to use SDR mode for HDR sources to help with brightness and that you must tweak them to your environment and sources. I do have both John Wick UHD BRs and I'll test them on the Sony 285 and Optoma UHZ65 I have here and compare them to Revanent and others.
I remember trying Adobe RGB and could just never seem to get the results that I got with Digital Cinema. If you guys got it, more power to ya!
I do have some updated settings for the LS10500 that should be better than what I've posted previously. I redid it basically from scratch when I sold my LS10500. I apologize, especially to the buyer, that I haven't been able to post them sooner due to my serious medical issues and now my workload making up time I missed and of course the Holidays! I'll dig them up and post them soon!