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Weird pattern
Old 02-14-2005, 09:50 AM   #1 (permalink)
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I was shooting a model yesterday. She was wearing some black fishnet stockings. In reviewing the images, I find that I am getting a pattern on the stocking. I think this is called a moire pattern, but not sure about that part. Anyway, does anyone know how to avoid getting these patterns? Is it a lighting issue or an equipment issue?
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Re: Weird pattern
Old 02-14-2005, 11:46 AM   #2 (permalink)
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As I understand it, it's an optical phenomenon caused by an interaction between the regularly spaced lines of the fishnet and the digitization sensor's regularly spaced elements. There's some info here, although I can't vouch for the utility of it.

I usually only see Moire effects on resized images. IF that's the case for you, try resizing to slightly different sizes, or increase the canvas size (in Paint Shop Pro language), rotate the image, resize, then rotate again. No promises, but that might work.
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Re: Weird pattern
Old 02-14-2005, 12:18 PM   #3 (permalink)
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I believe black and red patterns are especially vulernable to this.
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Re: Weird pattern
Old 02-14-2005, 12:29 PM   #4 (permalink)
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How do you process your images? The Phase One C1 Pro software has a anti-moire plug-in built in that I use occasionally. It works pretty darn good. I don't know if there are other plug-ins for PS.

Kerry
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Re: Weird pattern
Old 02-14-2005, 01:58 PM   #5 (permalink)
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Russell Brown has a good tutorial on his site:
Russell Brown Tips and Techniques

It's the one called "Moire Go Away"

Seems there's no perfect fix, but his method works the best of any I've seen to Photoshop this problam away.

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Re: Weird pattern
Old 02-14-2005, 02:01 PM   #6 (permalink)
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Actually, I first noticed it on the camera as I was checking my results (chimping)
during the shoot.
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Re: Weird pattern
Old 02-14-2005, 07:25 PM   #7 (permalink)
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[ QUOTE ]
Actually, I first noticed it on the camera as I was checking my results (chimping)
during the shoot.

[/ QUOTE ]

I tried "chimping" when doing a shoot today.... and all I got was this....



Oh well.. back to the computer and try to make her presentable...


Andrew
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Re: Weird pattern
Old 02-14-2005, 07:40 PM   #8 (permalink)
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Man,..when you chimp,...you REALLY CHIMP!!! LMAO
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