Reducing the Screen Door Effect (1 Viewer)

[Lew]

Has anyone had any luck with reducing the screen door effect. I have a Sanyo PLV-70 LCD projector using component video input (hopefully to upgrade to DVI soon) displayed on a 108" diag. Dalite screen connected to HD DirecTV.

I notice it mostly when watching CBS-HD. When I watch HDNet channel, I don't see any at all. So, I think it may be a function of the resolution of the transmitted signal, rather than the LCD projector.

Does anyone have any insights about this phenomena?

Thanks.

Lew W.

 

[ChrisWiggles]

Screen door is the resolution limit of the projector. Being an LCD projector it is worse. You can either defocus slightly, sit farther away, or buy a better projector...

 

[Lew]

This is a very high resolution projector. How do you account for the "non-screen door" on the one channel versus the other channel, which are both at 1080i?

Lew W.

 

[ChrisWiggles]

Screen door is solely a function of the pixel grid of the projector. That projector is a relatively high-resolution one, but still it is an LCD projector, which means the SDE visibility is greater than that of 720 DLP projectors, and I would still sit 2x or more from such a dlp, and even more from an LCD at this resolution if I wanted to eliminate SD, coupled with a little bit of defocusing.

If you are only seeing what you call screen-door on certain material, then it is something else you are seeing.

 

[Lew]

Maybe it is something else, and I will try defocusing a little and see how that works.

DLP is out of the question, because I don't have a completely dark room to view it in.

Lew W.

 

[Neil Joseph]

Moved to displays.

 

[Chris Moe]

I think you are confusing DLP with CRT. You don't need any better light control for a DLP than you do with an LCD (assuming similar lumens).

 

[DaveGTP]

A very tiny bit of defocusing should help with the SDE. I saw a lot of it at my sitting distance with my X1. Then I defocused just a bit. Now I only see it on the occasional white or very bright scene. I think the nickname for that is peekaboo screen door effect.