Cleaning up Hi-2 noise digitally


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Royce

New Member
Aug 25, 2003
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Singapore
www.roycelithgo.com
#1
Hi all,

Was at the Jurong Bird Park last weekend and shot some pics of a white Owl in an ultra low light environment. At first I thought not to bother trying, but decided to give it a go. So set ISO to Hi-2 and hand held 80-200. The shutter was quite slow, 15-30, but amazingly there's one pic that is very sharp. But the noise is pretty bad. I've tried some techniques to remove it and some PS Actions (Fred Miranda ISOX), but not able to adequately remove it. There's not really any colour to speak of in the image, so using channel mixer I was able to remove some of the really bad noise. Red channel had quite large well dispersed specks, whereas green and blue had lots of fine grained ones. So mapping Green to Red got rid of all of the large noise specks. But what about the others?

Anyone have any tips on how to clean this image up without too much image degradation?

Thanks,
Royce.

ps. I'm using D100.
 

togu

Senior Member
Jul 11, 2002
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@ D08
www.tommygui.com
#2
Royce said:
Hi all,

Was at the Jurong Bird Park last weekend and shot some pics of a white Owl in an ultra low light environment. At first I thought not to bother trying, but decided to give it a go. So set ISO to Hi-2 and hand held 80-200. The shutter was quite slow, 15-30, but amazingly there's one pic that is very sharp. But the noise is pretty bad. I've tried some techniques to remove it and some PS Actions (Fred Miranda ISOX), but not able to adequately remove it. There's not really any colour to speak of in the image, so using channel mixer I was able to remove some of the really bad noise. Red channel had quite large well dispersed specks, whereas green and blue had lots of fine grained ones. So mapping Green to Red got rid of all of the large noise specks. But what about the others?

Anyone have any tips on how to clean this image up without too much image degradation?

Thanks,
Royce.

ps. I'm using D100.
First of all, welcome to ClubSNAP! :gbounce:

How about give neatimage a try?

http://www.neatimage.com/

You'll have to carefully adjust your settings tho, else you might end up getting some "plastic" images.

;)
 

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