Although the 6040UB has faux K (pixel shifting), this is nothing new in HT projectors, JVC has been doing this for a few years now and Epson has had it in their LS1000 laser projector, which started shipping early 2015.
A note about HDR (high dynamic range): HDR is a fast evolving technology that is rushing into the market with everyone playing a bit of catch-up. As a calibrator for example there is very little in the way of test patterns to truly evaluate how well HDR is working. Each projector manufacturer has implemented their own HDR10 tone mapping and gamut mapping algorithms so the standard is a bit of a moving target. I predict a lot of firmware updates from manufactures as they themselves learn and refine their approach to HDR. The HT projector market has always had a bit of brightness wars between manufactures but now with HDR, (as with 3D) light output is even more important.
My time with the early engineering sample 6040UB was limited but I did find a number of issues with it that I hope are ironed out before Epson ships them to market. I sent most of my time in Cinema & Bright Cinema modes.
We provided our findings to the Epson product team, regarding many of these items, which require just minor corrections (i.e. changing the default HDR mode to HDR1, not the HDR2 used in this sample). Short version: There doesn't seem to be anything on Eric's list here "that needs fix'n", that Epson can't have updated before first shipments. -art
First up 1080p content:
In Cinema mode with BT.709 content, the pre-production 6040UB only displays the larger P3 (digital cinema) color gamut whether you select Auto, BT.709 or BT.2020. By reducing the saturation levels (too near 0) I was able to calibrate the 100% saturation gamut down to BT.709 but if you look at the after gamut chart you can see the 20, 40 & 80% saturation levels are way off (under saturated). (note: no projector can display BT.2020 so they scale down to P3 which is still bit bigger than BT.709)
In Bright Cinema mode, BT.709 content was displayed correctly, and was improved by calibration.
Grayscale bias controls were a bit course making precise adjustments difficult
In Cinema Bright mode gamma was extremely bright. I set my target to 2.10 which I thought was reasonable for a bright mode. What you see in the gamma log charts is the gamma set to -1, going to -2 just lowered gamma a little but kept the extreme peak and only attaining a 1.83 average gamma. I tried the custom gamma controls but found them very frustrating. I own the 5030UB and the custom gamma is just as frustrating, maybe I just need some tips from Epson on how to use it. I was hoping to use Cinema Bright for a “Day” mode but now I would only use it for sports or news, any movie watching I think I might use Cinema with lamp on high instead.
4K (UHD) / HDR content:
When you feed the 6040UB 2160p/HDR and under Signal tab in the menu you have it set to Auto, the projector switches to HDR Mode 2. Problem is there are 4 HDR modes and mode 1 seems to be the closest to the EOTF (Electro-optical Transfer Function) aka gamma target, as you can see in the ETOF charts.
The 6040UB allows you to choose SDR even though it’s being fed HDR. I would think you should not be allowed to do this and should stay locked into a HDR mode while being fed an HDR signal similar to what it does when fed 3D.
Lumen Output and Color Temp at 100 IRE (mid zoom and Medium lamp):