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I just demo'd an EIKI 800X600 (300:1 contrast) projector with 480P input from my DVD player and the screen door was very bad at 14' away with 80" diag image.


Will a higher resolution LCD projector reduce the screen door? Or does it have to do with other things in the particular projector?
 

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Fill-rate between LCD projectors differ as well. I believe the latest and greatest LCD projectors have a 60% fill rate. The one you saw, if it is relatively old, might have as low as 40% fill rate (that is, 60% of the area is actually black).


Most people defocus their projector a little bit to reduce the screendoor effect.


Higher resolution helps too. People claim that a 1280x720 projector has virtually no screendoor until you sit within 1.0x screen width distance away.


With a 960x540 projector, many people prefer sitting at 2.0x.


I sit 1.3x distance from my Sanyo PLV-Z1 (960x540) that is slightly defocused, because I'm stupid and really should sit at 1.6x or more. :D


I do see a fair bit of fixed pattern noise (8 pixel wide bands going across the screen). I hope to tweak that when I have spare time, assuming it can be done.
 

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Quote:
Most people defocus their projector a little bit to reduce the screendoor effect.
Another thing that can help is the projection screen. If you happen to be using a woven screen, sometimes the fibres can diffuse the light a little.
 
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