Originally Posted by Viche
So even with all the brightness killing/black increasing, color correcting cinema, color 1, and eco-modes turned on the image will be too bright?
How exactly does the filter affect image quality. Would I be better getting another dimmer projector instead of using this one with a filter?
If you can point me in the direction of high-quality neutral density filter for this projector I'd also appreciate it.
The effect on image quality would be trivial and most likely imperceptible. Tiffen makes quality filters, as do several other manufacturers. You have to know the thread size of the projector's lens. (I don't know what it is on the 4000.)
Too bright is an easy problem to fix. Too dim isn't. Don't even think about getting a dimmer projector because you think the 4000 might be too bright for the room. Someone might want a different projector for any number of other reasons, but that shouldn't be one of them. As I said, the good thing about having to filter a projector is that you get a "free" lamp later, when the brightness drops due to the lamp's normal aging. Take off the filter and you give your projector's brightness a goose. You may have to recalibrate because of age related color shifting, but you'll have the extra brightness to play with simply by removing the filter.
The image may not be too bright for that screen. No one actually owns this projector yet. Still, a short throw and a small screen may mean you will need to filter the lens. You might not want to, though. You'll just have to get it in the room and see how you like it.