I'm going to post this again since I got no response. I think this is a big deal since you don't really need/want an A-lens with this PJ and Sony is pushing it as a big screen PJ. What is also interesting is the effect seems to be greatly magnified with 2.35/2.37 content vs 16:9:
Is anybody else using the 1000ES with a very large screen and significant vertical shift (I'm also at almost minimum throw if that matters)? After looking at other Sony PJ threads, I've found reference on older models to my core geometry issue, which is slight trapezoid on the left and right sides (increases as you get closer to the bottom) and horizontal bowing in the bottom middle. I've had two projectors act the same way. I think maybe that is just the way the light path works with a lot of vertical shift (I'm not anywhere near the limits though, I'm less than 2 feet above the top of the screen).
I know it is not the screen because we ran a string test near the bottom of the screen with a perfectly level tight screen and could verify the bowing image with the test patterns built into the projector.
I believe now that my geometry issue at the top of the screen may be an issue with the screen boundary not being perfectly straight/level. That was throwing me off during initial testing with my original projector.
I think some of this may actually be able to be corrected by intentionally shimming the screen out of plane, but it may not be worth it. Not sure how big of a deal it is going to be long term since I don't have my HTPC hooked up yet and I haven't used gaming systems that much yet.
UMR on HDR vs 4K: The benefit of greater saturation and luminance capability is...not very evident in all images unlike more pixels which can be seen in every scene.