Originally Posted by Kris Deering
I've looked at native 4K fed to the PJ (via both a Redray player and a Sony Demo server) and 1080p upscaled to 4K (via a Lumagen doing the scaling or an Oppo 103D doing it). I've yet to see any reason at all to scale 1080p material to 4K or to use eShift with 1080p material in my setup (120" screen, 13 ft from seating position). Native 4K material looked really good, but I didn't see anything that couldn't be matched by a great 1080p source. Compared side by side with both a Sony 600ES and 1100ES with NATIVE 4K content, the JVC looked about 95% as good. Only really fine detail and text looked better on the Sony's in my setup. Most content (especially movie clips) looked nearly identical with only pausing and really looking for small differences showing any real differences. With normal viewing (especially movies and lots of motion) I think most would have had a lot of trouble telling the difference. Other picture factors start to make a lot more difference (contrast of the JVC, brightness of the Sony's). You see more difference with the super slow motion 4K video clips of nature stuff, but who sits around watching that stuff once real content hits the streets. It was the same thing with HDTV back in the the day with endless reels of Japanese gardens and nature footage. Once real content hit the streets no one watched that crap anymore and nothing looks like that except for Discovery Channel productions.
So you don't really see much difference with e-shift in either case it sounds like. I can't say it is a massive difference, but a subtle solidity to the picture that I like about eshift.
I agree that other display factors make a much bigger difference than 4K alone. Contrast and black level being tops to me. I would bet if had a 4K PJ and a 2K PJ which had superior contrast, black level, grayscale, and gamut most would prefer the latter. I often wonder how many people that think their new 4K TV looks amazing are simply benefiting from an upgrade in PQ from their old display, outside of it being 4K. How much of the great image of the Sony 4K projectors is a factor of it being their flagship model with better image processing, gamut, lens, ect. If you dropped 1080p panels into that PJ and nothing but the resolution changed, how much different would it look?
Now if we get 4K with standards like HDR, larger color spaces/greater bit depth and those displays have excellent contrast, black level, light output, and calibrate well....THAT'S what I hope for. But I think we are a ways off from all of that. Plus everything else in my chain that has to change for that to work!