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chris_s

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Posts posted by chris_s

  1. What does Aff Photo use to determine that an image is 'unprofiled.'

     

    Just to be sure, I downloaded the file that I sent you the link for. I had a look at the EXIF info and it shows:

    • Photometric Interpretation: RGB
    • Color Space Data: RGB (in ICC Header)
    • Profile Description: sRGB (in ICC_Profile)

    FYI: DCRaw defaults to sRGB (-o 1) so it puts in the 3 fields shown above and thinks that this is adequate to define it as sRGB.  Maybe Photo is looking at some other field(s) as well.

  2. I looked through a number of previous posts on this topic and that didn't lead to an obvious answer. This is the situation:

    • Loading a raw file (RAF) or the JPEG thumbnail from it works fine and everything looks normal.
    • Loading a .tiff file converted from the RAF file (using DCRaw) triggers the warning about using a default profile (sRGB) because it is an unprofiled document. It creates a very dark over-saturated image in Affinity. This .tiff can be opened in other applications (e.g. Windows Photo Viewer) and displays correctly.
    • Everything is defined as sRGB (the camera, the file, the monitor and the Affinity RGB color profile).

    I found that if I go into Color Balance and choose 'screen' rather than 'normal' it makes the image look proper. Is this normal behaviour and if so why.

     

     

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