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Using ACR to remove color noise...
Nov 29, 2019 23:08:49   #
Rongnongno Loc: FL
 
While experimenting with ACR sharpen vs other sharpen method I tumbled onto something rather interesting...

There are other methods that work just as well if not better depending on the image. ACR being the 'source' addressing noise issue there before entering PS CC can have serious benefits. Remember global adjustment first!!!

ACR sharpen is a great tool to remove color noise!!!!

1 - Original
2 - Color noise removed
3 - ACR sharpen slider used


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Original - existing color noise
Original - existing color noise...
(Download)

Noise removed
Noise removed...
(Download)

ACR slider used
ACR slider used...
(Download)

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Nov 29, 2019 23:12:22   #
Rongnongno Loc: FL
 
Comment on my previous tip thread...

ALT key tip on this menu work on
- Sharpening sliders (Check out the weird mask created, similar in 'finding edges but way more detailed).
- Luminance sliders

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Nov 29, 2019 23:22:10   #
Rongnongno Loc: FL
 
Note that removing noise globally will dull an image quite a bit.

To prevent this effect, use a luminance mask.

I use a simple one:
Shift-Ctrl-Alt-2 three times, adding to the original mask.
On the ACR layer remove the existing mask if any
Mutate the selection created earlier by press down the ALt key and click on the mask icon. This creates a mask preventing the wide highlights from being affected.
If you have created a normal mask (clicked only on create mask) make sure the mask is selected (click on it) and then press CTRL-I top invert it.
Please note that I further adjust the mask using levels (Ctrl-L while on the mask edit mode)



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Mask used
Mask used...
(Download)

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Nov 29, 2019 23:24:14   #
Rongnongno Loc: FL
 
Try this on one of your own image that has color noise due to under exposure, deep shadows or even a black background.

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Nov 29, 2019 23:38:17   #
TriX Loc: Raleigh, NC
 
Jacque, so the question is - where did you get the skull? 😱

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Nov 29, 2019 23:41:58   #
Rongnongno Loc: FL
 
The short story or the long one?

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Post-Processing Digital Images
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