Lightroom/Camera Raw: Automatic scratch and dust removal

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  • Updated 7 years ago
  • (Edited)
Many DSLRs have the capability to produce reference photos that can be used to remove sensor dust. For example, Nikon.

In addition, good film scanners have an infrared channel (Digital Ice) that programs like Vuescan can save as a separate grayscale image showing where all the dust and scratches are.

It would be simplify the workflow, and possibly improve results (if done right) if Photoshop/ACR/LR could make use of the DSLR reference photo or the Vuescan Infrared image to remove dust and scratches automatically.
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Photographe

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Posted 7 years ago

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Rob Cole

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Good idea, since having a white background in the reference photo allows the code to isolate only the affected pixels.

You may also be interested in this idea to better handle the case with no reference photo:
http://feedback.photoshop.com/photosh...
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Photographe

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Rob, if I understand it right, your other idea requires you to first identify all of the dust spots (which I suppose it would be best to do with a reference photo against a white background), remove them with the dust removal tool and then sync the changes to the other photos. I agree with you that would be quite a chore for a number of reasons, not least of which is the one you mentioned.

I wonder whether there are any third party RAW converters that do this automatically.

For the slide scanners, I am aware of only one program that can make use of the infrared info AFTER the scan is complete--VUESCAN from Hamrick Software--all of the others (Digital ICE/ Canon FARE) do it at the time of scanning only forcing you to commit to the level of removal you want.
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Rob Cole

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See comment in other thread (if you haven't already): http://feedback.photoshop.com/photosh...