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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 20 Nov 2006 (Monday) 15:01
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High ISO, noise reduction and sharpening...

 
mshill
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Nov 20, 2006 15:01 |  #1

I am new to post processing and had the "oppurtunity" to shoot in a poorly lit venue sans flash. I was forced to shoot at ISO 1600 and underexpose by 1/3 to 1/2 stop thus adding to the amount of noise.

My question is wrt post processing... Remove noise first then sharpen or sharpen then remove noise?


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In2Photos
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Nov 20, 2006 15:07 |  #2

Remove noise, then sharpen.


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Scottes
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Nov 20, 2006 15:09 |  #3

Ditto.


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ssim
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Nov 20, 2006 15:30 as a reply to  @ Scottes's post |  #4

And you can expect that a poorly exposed image (the underexposure that you did) will attract more noise in the image than if you had nailed it in the first place.


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Nov 20, 2006 15:37 |  #5

ssim wrote in post #2290267 (external link)
And you can expect that a poorly exposed image (the underexposure that you did) will attract more noise in the image than if you had nailed it in the first place.

Actually you will find that in this thread there was no less noise on an ISO3200 properly exposed shot versus a one stop underexposed, corrected ISO1600 shot.


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mshill
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Nov 20, 2006 15:44 |  #6

ssim wrote in post #2290267 (external link)
And you can expect that a poorly exposed image (the underexposure that you did) will attract more noise in the image than if you had nailed it in the first place.

Had to underexpose to keep shutter speed up in order to capture movement.

Thanks for the input. I processed about 700 photos that way (noise reduction then sharpen) and it seemed fairly successful. I was just wondering what everyone else did. I actually had the following workflow:

DPP (Raw) - Fix exposure (+1/2) and White balance, convert to JPG.
NoiseWare Pro - Reduce Noise (batch)
PSP XI - Crop, SmartFix, Unsharp Mask

I was very pleased with NoiseWare performance and PSP XI cropping and USM, but not so impressed with PSP XI Smartfix functionality.


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tim
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Nov 20, 2006 16:04 |  #7

Don't bother sharpening - try it yourself, in print not at 100% on your monitor, and make up your own mind about that :)


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dave_bass5
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Nov 22, 2006 08:49 |  #8

Quick question on this topic.
If i have an under exposed shot should i apply noise removal before adjusting the EC?

thanks


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Scottes
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Nov 22, 2006 09:26 |  #9

I don't think it matters since just adjusting EC will adjust noise and non-noise equally, so the NR software should not find a difference between the adjusted and non-adjusted noise.


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High ISO, noise reduction and sharpening...
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