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New Contributor
Posts: 2
Registered: ‎11-17-2012

Wich functions affect RAW images

If you are not using DPP wich of the following functions affect RAW images

1.- Chromatic Aberration correction

2.- Lens Distortion Correction

3.- Noise Reduction

4.- Long Exposure Noise Reduction

5.- Peripheral Illumination Correction

??


Thanks in advance for your answer.

Esteemed Contributor
Posts: 2,341
Registered: ‎11-14-2012

Re: Wich functions affect RAW images

None of those should have any effect on the RAW image. Those are in camera or in computer processes which get applied to the conversion from RAW to a jpg. If you read this Adobe document you should get a good idea as to what the RAW data is all about.

 

http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/products/photoshop/pdfs/understanding_...

 

The most important thing to remember about using the RAW image (actually data) is that you can re process it over & over without altering it. Each time that you run it through your software you create a new image file in any of several formats but you don't actually alter any of the original file.

"A skill is developed through constant practice with a passion to improve, not bought."
Frequent Contributor
Posts: 63
Registered: ‎11-24-2012

Re: Wich functions affect RAW images

I'm sure that Long exposure noise reduction is applied to RAW images. It's using dark frame subtraction so it will affect RAW images.

 

Brian / p4pictures

Canon specialist trainer, author and photographer - http://www.p4pictures.com
Esteemed Contributor
Posts: 2,341
Registered: ‎11-14-2012

Re: Wich functions affect RAW images

It's very possible you're correct but all I can find about it are discussions claiming that, but no definative proof. Do you have any further info? 

"A skill is developed through constant practice with a passion to improve, not bought."
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