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Something happens to the colours during export...

FirstName LastName

For a while I had the impression that my exports looked sort of different to what I thought I had exported. Now I took a picture of a wood pigeon in our garden, and with this picture the difference is very obvious. The first link is the picture as it looks inside capture one 22. The second link is the exported picture. I am doing something wrong, obviously - but I can't figure out what!

I hope someone can help me, thanks.

https://flic.kr/p/2nCVjMJ

https://flic.kr/p/2nCVkot

 

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Comments

4 comments

Date Votes
  • Propheticus

    TL;DR : Try to use proofing to see a preview of what conversion to sRGB colour profile will look like after export.

    Seeing a lot of greens in there I suspect something to do with colour space.  A RAW file or Adobe RGB has a wider range of greens vs sRGB.
    Looking at the original downloaded from flickr, your image was exported in sRGB. This is fine, but compresses some colour info out from the original RAW file you got out of camera. The original, while viewed from C1 might have contained greens outside your monitor's (/chosen device profile) range. 

    The way this is rendered depends on the chosen transformation [Preferences > color > rendering intent]. I'd pick perceptual, unless you're working with material that needs to be 100% colour accurate. ...but then you'd also want a professional wide-gamut monitor (close to 100% Adobe RGB) 

    To see what a picture will look like after exporting you can use proofing in Capture one. Via [View > Enable recipe proofing] the viewer will render how the image looks with the (last) selected export recipe's ICC profile.
    The export dialogue window also shows a proofed preview reflecting the chosen profile. This should match the way the saved jpeg looks. If not... you might've found an issue.

     

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  • FirstName LastName
    • Edited

    Thank you, Propheticus. I guess I found an issue then.

    I tried out all your recommendations: My preference setting was already at perceptual and changing the export to Adobe RGB made no difference. I tried various other settings as well, exporting as 16 bit tif for instance, but the exports are indistinguishable.

    And - you say the export dialogue window should match the output. That makes sense. But it doesn't: The issue is not visible until the actual export file is generated.

    Here is a screenshot of my export dialogue window:

    https://flic.kr/p/2nDy88A

     

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  • Propheticus
    • Edited

    Oh the wonders of colour management. It can be quite the puzzle to align a whole chain of devices and software to get predictable/desirable results. 

    Since the picture is very high ISO and contains a lot of fine grain, I wonder if it has something to do with how these individually coloured pixels blend into another (akin dithering). Does the colour as shown in the C1 preview change when you zoom in to 100%? Some of the processing is only shown at 100% zoom. Other processing is shown at the % zoom as if you would export the image resized to that scale. Different scales might blend differently. I suspect denoising might have something to do with this.

    *disclaimer: I'm just another user trying to troubleshoot with you.*
    edit: also see this related topic, and BeO first reply "high noise images can result in color shifts"

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  • FirstName LastName

    Thank you Propheticus and FNLN!

    I tried your suggestions along with several ideas from Pentaxforum - nothing helped. Proofing, viewing at 100%, various colour profile settings...

    But then I downloaded the latest update, installed, and my problem disappeared! Apparently it got bug fixed!

    Thanks for taking time to help out - I am just happy it solved itself!

    Mette

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