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Found 2 results

  1. https://ninedegreesbelow.com/photography/linear-gamma-blur-normal-blend.html http://www.ericbrasseur.org/gamma.html https://docs.krita.org/en/general_concepts/colors/linear_and_gamma.html Watch both links. Gimp v2.10.28 gamma is perfect, Pass my test. this modification to give more space to darker values does lead to wonky color maths when mixing the colors. We can see this with the following experiment: Left: Colored circles blurred in a regular sRGB space. Right: Colored circles blurred in a linear space. Colored circles, half blurred. In a gamma-corrected environment, this gives an odd black border. In a linear environment, this gives us a nice gradation. This also counts for color smudge brush: That’s right, the ‘muddying’ of colors as is a common complaint by digital painters everywhere, is in fact, a gamma-corrected colorspace mucking up your colors. If you had been working in LAB to avoid this, be sure to try out a linear rgb color space.
  2. Hello! First to introduce me: I´m a professional photographer for 35 years, with experience in many cases of professional photography, developing b&w, color negative, color positive processes, digital photography from its beginning, colormanagement. Meanwhile I work in a public photo archive with 100.000´s of photos from historical until now. About 90% are b&w photos. Digitalization of these photos and managing them in a DAM is my main work here. Right now I try to get a workflow with applications out of Adobe. But there seems to be a bug on the interface between CaptureOne and Affinity Photo. In CaptureOne 10 I export a b&w-file with embedded profile Gray Gamma 2.2. In Affinity Photo (V1.6.5.123) the settings for colormanagement is Gray Gamma 2.2 for b&w-files. When I open the exportet b&w-TIFF with embedded Profile, AP opens it in the Develpo Persona, shows the file extremely bright an assigns the profile for RGB to the photo because AP couldn´t recognize any embedded profile. I can´t rescue the file by assinig other profiles or by developing the file to what it should look like. If I open the same file in Photoshop with the same colormangement-settings, the file will be opened correctly without any profile-warnings. If I "save under..." this file without any changes, but with a new name in Photoshop and open this in AP, it will be opened correctly with the right profile an the right brightness. Any hints for wrong settings or steps in my workflow? Greetings Mikelike
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