I was really hopeful that 1080p DLPs without shifting, using the older DC3 chip capable of over 2000:1 on/off, would provide a better HDR "pop" as a result of this. But it seems like the new Optoma HD27HDR is getting poor feedback in this area, with owners calling the image "flat". That could be simply due to the unfortunate choice of a non-RGB colour wheel, so I have to ask myself why Optoma would have picked a colour wheel that boosted "lumens" to 3400 over the normal 2200, but meanwhile make the projector perform poorly in the main area it differs from the HD27. The original HD27 didn't get great reviews for black level, either, but I couldn't find any published numbers.
My last hope for decent 1080p + HDR was the Optoma. There is the new Acer G550 that does 120hz but no HDR10, and I really want my next projector to have both. Shifting is a great technology, but the 0.47 inch and even 0.66 inch DMDs are downgrades from what I own currently, so I don't think it's worth trading contrast for extra resolution, real or fake. For me the greatest limitation to motion clarity on my w1070 is the lack of 120hz support.
One of the first things I plan on doing when I buy a new projector to replace this one, is rebuild my old w1070 with RGB lasers and try to do rec 2020 with it. Turning each laser on/off at 4X 60hz (240hz) should be trivial and getting it in sync with what the RGBRGB colour wheel would be doing using a phase delay knob, as well. I can't wait to muck around with it.
I might even try to buy an aftermarket HDMI 2.0 controller used on these newer projectors to get 120hz and HDR10 decoding, as in the HD27HDR. One cheap upgrade that I'm rather sad that nobody ever tried here on AVS, is using the
lenses to adjust the white point so that you can use Dynamic mode and boost contrast by 40% (1400:1 in other modes -> 2000:1). Right now Dynamic mode on my w1070 is unusable because it's so green, like many other lamp-based projectors, but it represents the "true" colour of the lamp, as seen through the CW filters, without any dynamic dimming per channel which is what kills the contrast and dynamic range. You definitely want to avoid, as much as possible, compensating for the gamut of the light surce digitally. Which is why I think with an RGB light source my old w1070 could maybe hit 2500:1 native contrast and rec 2020 or at least more than P3 (assuming I purchase the new green lasers from Nec).
The beauty of using your PC to drive your projector is you can tune the colours manually. I'm also passing full 10-bit RGB now to my w1070 since I upgraded my videocard. I just need to figure out how to make the framebuffer 30-bit RGB (10-bit per channel) instead of 32-bit RGBA. In full 10-bit and with Gamma 2.8 with 2500:1 and dynamic laser dimming (controlled via my PC instead of the projector itself, so it could go down to 0 IRE fully off), I think I could boost my trust old projector to deliver quite decent HDR10. And 120hz would allow some modest resolution increase via 2-way shifting, similar to JVC and Epson e-shift. I have a pair of Optotune XPR shifter samples capable of 240hz laying around, but no controllers for them. Sadly TI doesn't sell them but it's possible to DIY some. Or, just use a JVC e-shift or Epson e-shift device, which requires polarized light input to avoid dropping 50% of the lumens, but if I'm using RGB lasers that will be the case. e-shift 120hz is superior to XPR 120 in this case, because it's noiseless, with no mechanically / physically moving parts. XPR shifting method is basically really, really low-tech, but it works with randomly polarized light which makes it a requirement for DLP.