Originally Posted by markmon1
Scaling windows text to 250% isn't going to look ultra sharp as it's not a scale factor that's a perfect multiple. Your sharpest text will be 1920x1080 @ 100% or 200% DPI scaling. Or 3840x2160 at 200% DPI scaling. Desktop text is one of the main ways to see the massive deficiencies in an pixel shift type tech.
Believe it or not, the e-shift's job isn't to make the image sharper. It's to clean up the image by eliminating the pixel gap. The JVC eshift was similar in this manner. It didn't really sharpen the image a ton either. It's not like the DLP shifting that actually provides 4K worth of addressable pixels. So yea your image is going to just look similar. It's a 1080p projector at heart. Give up on trying to benefit from 4K resolution on this projector. That's not in the cards here.
However, this can still benefit you in games. Because you cannot see the pixel gap, you may not be able to see the jaggies at 4K resolution in your game and therefore, you may be able to disable anti aliasing in the game at 4K. Give this a try. Since anti aliasing is a huge blur filter, disabling it will significantly increase sharpness. At 1080p you cannot do this because you'll see stair steps all over the place. The pixel shifting should hide this pretty well. Of course whether or not you can get away with this depends on the size of your screen, how close you sit while playing games etc.
This is somewhat incorrect. Upscaling assumes that the game renders at 1080p then something upscales that to 4K. This is for sure not what's happening. Almost every game can render at 4K. If the game has an option to run at 3840x2160, it renders at 4K. It may not have 4K textures, but it will provide 4K sharpness in its rendering. Since everything's rendered on the fly in a modern 3D game, upping the resolution makes a huge difference.
Unfortunately, the colorspace mismatch makes comparing these impossible
But, you're going to see far less difference in sharpness in a movie even if you had a native 4K projector here. So this is not going to be a good test. Stick to games for your comparisons it is much easier to see the benefits.
Finally figured out MPC has a screen capture option that takes in hdr. Below is 4K vs 1080p with the right color for comparison:
Besides 4k having better color due to hdr, they appear like they're literally identical in sharpness. I wish I can even say the 4k is a hair bit sharper. Projectorcentral.com and projectorreviews.com both claim that Epson's pixel shifting "isn’t truly as sharp as a single chip DLP (4K UHD) or a native 4K projector, but..they all look pretty close, thanks to image processing." Either they're both wrong (which I doubt), or something's not right on my end (my computer, software/hardware settings, or projector).
Below is the comparison as you requested between 4k game with antialiasing, 4k without, and 1080p with antialising:
I'm not seeing much, if any difference. I'm okay with accepting that Epson's pixel shifting does nothing, but that doesn't explain projectorcentral, projectorreviews, and many people in the 5040 and 5050ub megapost that claims that they've compared side-by-side and there's only a small difference between native 4k and Epson's pixel shift. If they see a small difference between Epson and native 4k, I should be able to see a big difference between 4K and 1080p. I'll be absolutely happy even if there's a fraction's difference between 1080p vs 4k, but in my case, there's zero difference when watching movies and playing games. You mentioned that Epson doesn't make the image sharper, but just cleans up the pixel gap. Even if the 4K image was not sharper but only a tad bit cleaner, I'll be happy. The movie screenshot I provided doesn't look at any cleaner. If it does and my eyes are not looking at the right spot, please let me know.
The only wrench to throw into this problem is when I load up Youtube 4k video, I can see a difference between 4K and 1080p when changing the quality settings. Maybe youtube is doing some funky rendering on their end that would result in this?
I'm hoping someone comes up with other troubleshooting ideas that I can try. But if not, I guess my only option left is to have a professional calibration done, and then discuss with that person (since they've worked on hundreds of projectors) to see if my issue is normal or not?