Originally Posted by scottlindner
I also noticed when using the projector central calculator that the gain for this projector seems to be over the top. It seems for my throw distance, screen size, and all other settings that I need a screen gain of 0.4. It makes me think I'm not doing something right since my room is 19ft depth so the viewing distance will be 16'-18' with somewhere around a 175" to 200" diagonal screen. Does this projector really kick that much light, or is there something stooped that I'm doing?
For screen size it's a personal preference, just use it and see what looks right.
Have you used it on a wall and found 175-200 inches ok?
Same with the resolution, it varies from person to person.
The UHD60/65 are definitely not bright enough for a screen that size, check out the lumens measurements in these two links:
You take the screen dimensions:
Calculate the square footage:
And then divide the the lumens measured in the reviews above by the square footage. The result will be the fL of the screen.
15fL is recommended for SDR, 30+fL for HDR.
There is also the issue of how much light is lost when the zoom is used, also noted in the reviews.
In the 4K space, not even the HC3800 might be bright enough for a screen that size.
Maybe with some ALR paint, because the screen would be very expensive, if even available.
I'm not sure what projectors in the home theater segment exist that could power that, maybe in the professional/venue segment.
Some UST's have high lumens, but I don't know if they can throw an image that size.