VPL-VW665ES 4K and Sharpness Demonstration
Above in the first photo player, you'll find 4K photo pairs. One is basically uncropped, the other far more so. Remember, that even if you expand our images normally they are only 1000 pixels wide, barely half of a 1080p image. That's why the close ups. And in this case, most closeup 4K images are 2000 pixels wide for better detail observation.
You can tell the difference between 1080p and 4K content, all of which is more detailed than any less expensive projector.
More 1080p images, 4K vs 1080p content compared
The first six images are of 1080p content.
Note that Reality Creation is on, at default levels for all of these images.
The last three images are from a scene in The Fifth Element. The first two are taken using the 4K version of the movie, which I downloaded. It is a shot of the Secretary (with greenish hair), and a close up of her at higher resolution. That's followed by a third image of her, but from the 1080p version of the film. (Similar frames).
The closeups again are 2000 pixels wide, but both the full frame 4K and 1080p images are the usual 1000 pixels across, yet you can still see the difference in sharpness and detail.
I downloaded my copy of The Fifth Element in 4K from the 4K Download service ($29.95.)
As you can tell, 4K-Matters! (Especially when viewing from 8-15 feet back on a 124" screen!) BTW the difference in color between the two 4K images compared to the last image (1080p) is due to the different production and storage values of the older Blu-ray vs. the 4K download service. (I expected them to be closer.)
Image Noise and Audible Noise
Image noise handling is extremely good with very little mosquito noise. Motion artifacts are not a problem either except for the issue already discussed with panning at a certain slow speed on 24 fps movies.
Audible noise is not an issue at all. You can't here the iris action, and the fan noise at full power is typically as quiet as most good projectors in their Eco modes, and the VPL-VW665ES in Eco mode is close enough to silent to be no issue at all.