S9+ does the home theater
Here's a hand-held Galaxy S9+ shot (using the default camera settings) of our projection system. See the cat at the bottom for scale. I thought the phone did a very creditable job; it's got a pretty good camera. f/1.5 doesn't hurt in this kind of application, either.
The ISO 320 / 1/10th sec combo... that's probably too slow a shutter speed for a really sharp image - this probably accumulated several image frames. I would think it'd be better / sharper at a higher ISO. But still, not bad.
The image was skewed - I couldn't stand up to take the shot or I'd make a shadow on the screen - so I took it into Lightroom and (mostly) un-skewed it. I also cropped it. Otherwise, pretty much as-shot.
The image is in motion, delivered from a Bluray at 1080p, via an XBox 1S and a Marantz AV7703 pre-pro to an Optoma projector.
For reference, the display is 204".