ChrisTheDev Posted February 24, 2021 Share Posted February 24, 2021 I just started shooting RAW (CR3) with a new camera (Canon 90D) and noticed some artifacts when developing from the Develop persona. The images are large (32 MP), so occasionally it takes half a second for the changes to propagate to the image. For example, I will modify the shadows/highlights and for half a second the image will scan (or pixelate) as the changes are applied. Sometimes when I do this I notice large, slightly discolored squares as if the effect wasn't completely applied. For an image of this size, the squares are probably around 500px to 1000px on each side. I can fix it by modifying the slider again, but when I actually press "Develop", the squares usually return. On one image I was able to remove it, but on another it had 3-4 of these discolored squares so I had to reopen it to make the changes in the Develop persona again. My graphics card is always up-to-date and I'm also using the latest version of Affinity Photo. Quote Link to comment Share on other sites More sharing options...
alan_hodges Posted February 24, 2021 Share Posted February 24, 2021 I have this problem too and it is serious because it severely limits what you can do with the shadows/highlights. In fact, it prevents you from processing a RAW file in the manner recommended by James Ritson in his video on RAW devlopment. See attached image.rail-0124.dng rail-0124.dng Quote Link to comment Share on other sites More sharing options...
Staff MEB Posted February 24, 2021 Staff Share Posted February 24, 2021 Hi @ChrisTheDev, @alan_hodges, Welcome to Affinity Forums What OS version are you both running? What's the specs of your machines (graphics cards)? @ChrisTheDev, Can you also attach a sample file please? Thank you (just in case the issue is different/we need to test ourselves). Quote A Guide to Learning Affinity Software | Affinity Quick Reference Link to comment Share on other sites More sharing options...
ChrisTheDev Posted February 24, 2021 Author Share Posted February 24, 2021 Hi @MEB, I'm running Windows 10 with a GTX1050Ti and 16GB of RAM. Quote Link to comment Share on other sites More sharing options...
alan_hodges Posted February 24, 2021 Share Posted February 24, 2021 I am using version 20H2 of Windows 10 and my gpu is NVIDIA GeForce GTX 1050 Ti with Max-Q Design. Thanks. Quote Link to comment Share on other sites More sharing options...
ChrisTheDev Posted February 25, 2021 Author Share Posted February 25, 2021 @MEB I've uploaded an afphoto file and a screenshot of what the image looks like on my screen. square-discoloration.afphoto Quote Link to comment Share on other sites More sharing options...
alan_hodges Posted February 25, 2021 Share Posted February 25, 2021 For me the problem has been fixed by today's version 1.91 and I'm grateful for that. However, the update keeps throwing me out, notably when moving from the Develop to the Photo persona, though there are other occasions which I have not yet noted. If I load a RAW image and immediately hit the Develop persona button, it does it then. Another time, I was still in the Develop persona and using <Details> <Noise Reduction> <Luminance details>. It's annoying, especially if I've lost a lot of work . I know I can save frequently and I'll have to get into that habit or else go back to v.1.8. Quote Link to comment Share on other sites More sharing options...
ChrisTheDev Posted February 25, 2021 Author Share Posted February 25, 2021 As @alan_hodges said, the issue appears to be fixed under 1.91. I've only tested a couple of images, but I'm not receiving any of the discolorations. However, I did see that the update appears to have changed my rendering card from the 1050 to the integrated card, which I changed back. This may be the cause of @alan_hodges's crash issue. Quote Link to comment Share on other sites More sharing options...
alan_hodges Posted February 25, 2021 Share Posted February 25, 2021 Thanks for your suggestion @ChrisTheDev. However, I've now checked my Preferences and the Renderer is still the 1050 so no luck there, sadly. Quote Link to comment Share on other sites More sharing options...
alan_hodges Posted February 26, 2021 Share Posted February 26, 2021 I found the answer: it's the Hardware Acceleration. For some reason, AP doesn't like OpenCL. I don't really need it so it's just just a question of unticking the box. Quote Link to comment Share on other sites More sharing options...
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