Originally Posted by coderguy
Any other border color other than black stands out to our eyes. So even though black may technically make the PJ's black next to the border appear brighter, the goal is you shouldn't see or notice any border at all while watching movies, that is the point of the black border (as well as to absorb overflow if you can't mount perfectly). Since you don't really see the border, you aren't able to compare it by eye so it does not have the negative effects discussed in this thread usually.
but this is true only for a perfectly dark room, yes? in that case, a black border , white border, green border would all appear the same..dark and completely invisible. In a room with ambient light, the border is very visible, and becomes a distraction with the issues mentioned. Especially when putting the most light absorbing surface (velvet) against the most reflective one (the screen)
The ambient light approach is based on 2 simple observations:
1. in a perfectly dark room, with a projector showing an empty frame, the screen is the lightest surface receiving the most light in the room. We've all been disappointed staring at the grey box on the wall, at least until the movie starts. This is a technical limitation not easily fixed, except for CRT or very expensive projectors, DI, etc.
2. Our eyes our easily fooled. Even after knowing the two grays on the checkerboard are the exact same value, it's impossible to see them as such (at least for me)
Is there a way to use this effect to improve the perceived image quality? Especially because the vast majority of projectors (including mine) have average blacks and are viewed in less than optimal rooms. I've been amazed by the "floating window" effect a few times, but it was pure accident. I'd like to understand better how to achieve that effect more often.
You have much more technical and practical experience, but reconsider some assumptions about ideal viewing. You don;t think my approach has any merit?