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SDE: Dependent on source or display?

post #1 of 5
9/13/07 at 12:48pm
Thread Starter 
I've seen lots of posts on how the Screen Door Effect (SDE) is greatly reduced at 1080 than it is at 720. Is this referring to the display resolution or the source material?

If I have a 1080 display, will the SDE be greater if I am viewing broadcast TV or DVD as opposed to an HD broadcast, or is it only a concern if my display device tops out at 720?

I want to think that the "lines" are static and don't change in size when viewing a lower rez image - that the display just uses more pixels to display one "720" pixel. Or it could be the display "zooms" in on lower resolution sources. I just don't know.

Thanks!
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post #2 of 5
9/13/07 at 10:10pm

Re: SDE: Dependent on source or display?

At the same seating distance, 1080p will have the least SDE, 720p second least, then 480p the most. It's due to the resolution of the projector.
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post #3 of 5
9/15/07 at 3:58pm

Re: SDE: Dependent on source or display?

Quote:
Is this referring to the display resolution or the source material?

Display resolution.
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post #4 of 5
9/18/07 at 7:59am
Thread Starter 

Re: SDE: Dependent on source or display?

Thanks!
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post #5 of 5
9/19/07 at 2:49am

Re: SDE: Dependent on source or display?

Yes something with the resolution of the projector .
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