Quote:
Originally Posted by ProjectorBoy25
When u say a narrow viewing cone of 30 degrees....do u mean the projector can only be 30 degrees above or below the screen?
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It means the picture's brightness diminishes quickly when
the viewer (audience) is more than 30 degrees off centre from the screen in any direction.
This is how screens with "gain" work; they reflect the light from the projector, not evenly, but "concentrated" towards a given direction.
What you have to realise, whatever you do, is that no projector can project "darkness"; they can't remove any light that's already falling on the screen from within the room; all they can do is add more light to what's already there. Any black parts of the image are simply handled by a projector by it emitting no extra light at that point. So, however bright the screen is, with the projector off, that's what colour "black" is going to be.
So, the only things you can hope to do, to get a useful image are:
- reduce ambient lighting
- or use as dark a corner as you can find
- and have a projector that emits LOTS of light for the bright areas, so as to give you as much contrast with the (not very) dark areas in your picture.