Originally Posted by auleo
Good call. My current projection room is not ideal:
1. projector sits ~4m from the screen, but that is not enough to make the huge ~150'' image fit, so it's slightly tilted
2. screen is "OWLENZ 120 inch Projection Screen 16:9 HD Foldable Anti-Crease Portable" stretched to ~150" ... you can see the material is not meant to be stretched like this!
3. walls are completely white and bounce off a lot of light.
See attached schematic.
Getting a more suitable projection room would mean moving to a different home. Getting a new projector while using the same room is a challenge because I'm yet to find a 4K projector with such a short throw as the Optoma.
Ideally the screen should be perpendicular to the floor. Keystone is software and degrades the image.
If the room cannot be treated then it's not really worth getting another projector.
The 51A is sharp enough.
A brighter model could be from the Epsons, but they are not as sharp, and if you're happy with the brightness, then no reason to change.
3LCD on the Epson does not handle motion as well as DLP.
A projector with good black levels would deliver better black level in very dark image, but as images get brighter they will be affected by the reflections.
What about using curtains to reduce reflections?
Better to invest in something else, like a proper screen, or audio.
One way to improve picture quality, especially blacks, is to paint the screen in a special mix of paint. It will make the dark parts darker and bright parts brighter.
It's not complicated, but does require painting.