Originally Posted by NYHT Noob
This is my first post, being new to projectors. Hoping you folks with more experience can give this noob some advice.
I'm setting up a basement HT, and have ordered an Optima HD20. I'm planning on a ~100" viewable screen, with a throw distance of 12' (based on an online projection calculator I found). This will be mainly for movies, and the room should be quite dark, as it is a basement with few windows.
For the screen, I'm looking at a budget Focupix HDVio 110". My dilemma is that I can't decide between a 0.9 gain vs 1.3 gain. Will there be sufficient light output if I choose the grey? Or will I loose out on washed out blacks if I choose the 1.3 gain? It seems I can't know without trying it!
Any suggestions?? Thanks in advance.
DrNegative already gave some great info on offset and screen gain. I would like to point out that while I have only used a 1.0 white screen with my HD20, I have used a grey screen with a less bright HD70 and preferred the white screen. Though with the HD20's brightness on it's low bulb setting and at 125" screen size, I think it's too bright with a 1.0 screen and the blacks start to suffer. Of course there are a lot of opinions on this subject. At 100", I think you will be happiest with a 0.9 grey to a 1.0 white screen. I highly recommend you stay away from any gain boosting screens as the HD20 is very very bright.
If the place you are getting the screens from has a great return policy, I would start with the 0.9 grey screen if you are looking at 100" 16:9 size. With 100% light control the whites will still be bright and the blacks darker. And if you don't like it, you could always get the 1.0 white screen. I wouldn't go higher than 1.0
Of course you could start 1.0 white and then try the grey 0.9 , I wouldn't go lower than 0.8 to 0.9 for low gain screens though.
But my own personal opinion for pretty much all projectors is that a white 1.0 screen is always a great starting point.
With my HD20 and the 125" 1.0 white screen, I seem to be the only one complaining about black levels. Everyone else that seems my setup and watching movies or plays games with us, loves the system. Of course I think they are just caught up in the experience. Which is the main goal anyway.