LED screen diffuser

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LED screen diffuser

Postby dun_panic » Mon Mar 18, 2013 10:55 pm

Hi all, anybody know about the led screen diffuser to reduce the moire effect?
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Re: LED screen diffuser

Postby PID_Stop » Tue Mar 19, 2013 11:02 am

dun_panic wrote:Hi all, anybody know about the led screen diffuser to reduce the moire effect?

How are you getting moiré? Shooting a monitor with a camera? Looking at it through a window screen?

In general, moiré is the interference product between two patterns superimposed, and is especially evident when there is a slight difference in angle between the two patterns. You can reduce it by decreasing the detail in the patterns -- but then it also reduces the detail in the original picture. Unfortunately, this is not a new problem: in the printing world, making a halftone of a photograph can create moiré if there's a tight pattern in the photo.

If you're trying to get computer display into a video form, probably the best approach is to use a scan converter rather than a camera; if you just need a still, most computers let you take a screen shot.

-- Jeff
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Re: LED screen diffuser

Postby Baylink » Tue Mar 19, 2013 12:35 pm

I'm assuming he's got LCDs on-set, and is getting moire in his shots; that's really hard to fix in a general fashion.
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