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Showing posts 26 - 27 of 27, (reverse)
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Minolta DiMAGE A1
 05/20/2004 04:00:59 PM · #26
The smaller size of your image files is not due entirely to "fairly high compression". Whenever you remove noise from an image you will have a reduced file size. And every time you save to JPG, whether it is when coming out of NI or after converting from TIFF, you will lose some data and therefore have a smaller file.
Fujifilm X100VI
 06/04/2004 06:20:19 PM · #27
I prefer to do the noise reduction as the first step.
But I don't use Neat Image or something like that, but Fred Miranda's Chroma Noise Reduction action for PS. It leaves the structure and original sharpness of the image as it is and only affects the color noise (red/gree/blue color shifts in color patches).
I had to sent a B&W to a newspaper of a shot where I underexposed to save the highlights. So I had to push the shadows considerably (1 stop or more?) with the Dynamic Range feature (setting 3 on a preset B&W conversion with yellow filter) of Fred Miranda's B&W Pro plugin for PS.
One attempt was with the noise reduction after the shadow correction and the other one before I did anything (including straightening, curves etc). The shadow detail of the pre-NR looked much better as that from the post-NR.
I have seen that happen before and therefore I prefer to correct the chroma noise (not the pattern noise) first. I don't care about the pattern noise. All those programs that change the pattern noise to softened mediated non-noise are crap imho. Change the chroma and you don't notice the pattern that much. That's what I prefer.

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