What causes more washout? Light hitting the screen, or light rays crossing projector's light beam path? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 01-05-2013, 03:57 PM - Thread Starter
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Kind of a strangely worded question. If I mount a pj at the back of a room, and there are a few potlights beside it, does the light that the pot light spreads in to the room effect washout, even though the lights near the screen are all turned off? In other words: if the projected light from a PJ is 'cutting' through ambient light through the room, does that effect picture quality? Or is it just about what light hits the screen?
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post #2 of 3 Old 01-05-2013, 06:38 PM
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ANY light in the room will affect the image. The worst kind of light is where it shines right on the screen. Make sure to use dimmers on all the switches.
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post #3 of 3 Old 01-05-2013, 09:00 PM
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Here's the issue.
Screen is white.
What makes the parts of the image that need to be black, black?
The absence of light is the only thing that makes black things black.
Now with whatever light you have on in the room were ever it is, look at the screen without the projector on. What you see is the blackest black you will have in any image.
The other problem is that when the projector is on and the screen is all lit up, if the walls are not a very dark color, all the light from the screen image reflects back off the white walls, ceiling and floor just like having lights on in the room..
Hope that helps!

Doug
Planar PD8150 with DC4 DMD paired with a Dalite HP 2.8 110"
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