Permissions issue for Epson scanner & Capture One

ash daniyan

• 2020年07月29日 13:09

Hi,

I primarly shoot film. Ordinarly I send my negatives off to a lab to be scanned which I usually receive via wetransfer or similar. This files are absoltely fine and fully editable in Capture one 20.

I recently borrowed an Epson Scan 750 Pro from a friend and began scanning my latest negatives. Using Epson Scan my Tiffs come into CO with the crossed out pencil icon, meaning I can not edit them. Preview, Photoshop etc are able to edit them with no problem.

Checking the permissions they have all the persmissions you would expect, but no matter if I cange each individual file to chmod 777 chmod 755 Capture One is unable to edit them due to what it perceives a permission issue. The images are neither too small nor to big either.

If anyone can suggest what I can do to get Capture One to actually edit these images i would be very grateful.

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  Permanently deleted user

  • 2020年07月29日 13:27

  Hi Ash,

  Capture One doesn't accept gray scale images. Accordingly, you should scan your films using an RGB output for the scanner.

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  ash daniyan

  • 2020年07月29日 13:45

  Ah,

  I'll try that next time time. I only had use of the scanner temporarily but I will note this down for when I purchase one myself.

  Thanks so much.

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  Permanently deleted user

  • 2020年07月29日 18:22

  Besides scanning to RGB you may want to use raw scanner output, if available, and do the conversion from negative to positive in Capture One.   I find I get better results that way using Vuescan with my Epson 600.

  Vuescan lets me save the "raw" output of the scanned image as a DNG file.  Once in Capture One I do these steps:

  • set the curve to Linear Response,
  • set the white balance from the border of the scanned image
  • crop the image to size
  • convert it from a negative to a positive using a saved adjustment on levels which drags the white point all the way to the left and the black point all the way to the right.
  • Get close to proper color balance (for color negatives) by using the auto button on levels with channel mose set to RGB in preferences.

  That sounds like a lot of work but with keyboard shortcuts it only takes a few seconds.  The time sink is getting rid of dust and negative spots using the heal tool.   It doesn't help that recently I've been scanning 30-50 year old negative that were not stored very well.

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  Permanently deleted user

  • 2020年07月30日 04:45

  Thanks for that tip, Marco. I didn't know Vuescan could save as DNG.

  I just tried it, loaded it into C1 and now have a much better image of my grandparent's wedding.

  Regards

  Shane

   

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  cayenne

  • 2020年08月03日 20:43

  I'm away from my main system I used for film.

  But do you have any idea if the "RAW" scanning to dng is available for Silverlight scanning app?

  C

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