plpub Posted March 19, 2023 Share Posted March 19, 2023 (edited) Hello I have problem with the color rendering of the export preview in affinity photo vs color rendering of the image I am currently editing. I joined a simple example. p00.afphoto : original image (blue sky) edited with color format RGB/8 and profile sRGB p00.afphoto I add a soft proof mask with same parameters (sRGB) for the example When I ask to export the image in JPEG (sRGB as well), the blue color is different in the export preview compared to edited image. And the difference is visible whether I activate the soft proofing or not. I would like to know what is wrong in my manipulation ? What I want is to be able to edit an image and being able to view the color rendering of resulting print I want to use. I understand that soft proofing is the tool to use, but and I do not understand why the export preview is so different than the edited image, even with soft proofing activated. Thanks in advance Pierre Edited March 19, 2023 by plpub Quote Link to comment Share on other sites More sharing options...
lepr Posted March 19, 2023 Share Posted March 19, 2023 Your document has sRGB profile, so there is no point in using an sRGB soft proof - it won't, and shouldn't, have any effect. There could be a colour management problem particular to the Windows app because the document view and export preview (with same export options as you) match on my Mac. Also, it's possible that your export preview is closer to being correct than your document view. It's hard to tell because your screenshot has no embedded profile and there's no way for me to know its history of possible profile assignments or conversions. My screenshot was converted from the display profile to sRGB before uploading to the forum. However, I will say that your screenshot has an export preview that is very close to mine (export preview and document view), whereas your document view appears very noticeably different. Quote Link to comment Share on other sites More sharing options...
plpub Posted March 19, 2023 Author Share Posted March 19, 2023 Thanks for your reply. The use of sRGB everywhere in my example was just for easy understanding and I agree it should have any effect indeed. What is very interesting is that you don't have the difference in rendering with the MAC application. Could it be a bug in Windows application ? Quote Link to comment Share on other sites More sharing options...
lepr Posted March 19, 2023 Share Posted March 19, 2023 2 hours ago, plpub said: What is very interesting is that you don't have the difference in rendering with the MAC application. Could it be a bug in Windows application ? I did say, "There could be a colour management problem particular to the Windows app [...]" Notice I said "could be", not "is". Hopefully, a Windows user and/or a Serif representative will assist you now. Good luck, anyway. Quote Link to comment Share on other sites More sharing options...
lacerto Posted March 19, 2023 Share Posted March 19, 2023 There might be a generic problem with your color management, related to what you are using as your system display color profile, as I could not experience any issues with the photo that you provided. The document canvas and the preview showed colors identically, and applying sRGB soft proof did not make any change (as it should not, when applied on an image that is already in sRGB color space). [Note that whenever you print or export, you should as a rule turn off Soft proof Adjustment, it is just for preview, not production.] Note though that there is a known issue with the standard (but actually legacy) sRGB 2.1 with Affinity Soft proof, causing that this profile actually never works, even when it should, like below when applied on an Adobe RGB image (note that the difference is less distinct here on the forum, but should still be discernible): srgbs_win.mp4 The alternative v2 2014 profile used in the clip can be downloaded here: https://www.color.org/srgbprofiles.xalter#v2 As a general note I would not be too concerned about seeing the preview showing colors that deviate from what you see on the canvas (except for in very simple situations as in your example, which indicate a clear problem) -- or what you finally get exported. E.g. in the screenshot below there is a mixed mode PDF placed in CMYK mode document and opened in export view to be saved as an sRGB PDF. The CMYK canvas is already limited to sRGB gamut so it cannot show realistically e.g. the 100% cyan ellipse (even if the display gamut supports it), then the preview seems to display the RGB color values in raw display gamut, the rightmost image showing what is actually output, previewed in macOS Preview app. Quote Link to comment Share on other sites More sharing options...
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