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JoelOwens

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  1. Thank you very much for your explanations. I think that clears everything up.
  2. Hi, what is the difference between HSL adjustment (saturation shift slider -100 %) and Vibrance adjustment (saturation slider -100 %) when used for desaturation in Affinity Photo? The result with HSL adjustment usually appears darker. Why? Thanks.
  3. Added a TIFF test file and a JPEG export from Affinity as well as screenshots from Affinity and ExifTool. example_299.tif
  4. No, the problem is completely independent of the document size. Of course, I noticed it in a larger file, but I can't upload it here. I have also tested it again in the Mac version, the error also occurs there. The error also exists before the current version.
  5. And it is also calculated differently when switching between 8 and 16 bit or grayscale and RGB. There must be something completely wrong.
  6. Oh. Another related bug. Depending on how the image is saved (strips), Affinity calculates differently The screenshot shows the output of Affinity, now calculated as 23 dpi for the second test file attached here, together with the output of ExifTool. example-2_resolution_cm.tif
  7. Sure. Attached is the example file and a screenshot showing the resolution in Photoshop (pixel/cm), in GIMP (calculated in pixel/inch) and incorrectly calculated in Affinity. In addition an output of ExifTool for the example file. example_resolution_cm.tif
  8. The following scenario: a TIFF has the following information Resolution (X and Y) 299.999 , Resolution unit: inch. Using Document size in Affinity Photo this is correctly specified as 300 dpi. If the image is now exported as JPEG, then 299 dpi is written there as resolution instead of 300 (or unchanged 299.999).
  9. The resolution is calculated incorrectly for TIFF files that have cm as resolution unit Correct: Value in cm * 2.54 = Value in dpi To me it looks like the following is calculated: Affinity Photo Win: value in cm / 2.54 / 2 Affinity Photo Mac: Value in cm / 2.54 For example: The file specifies 118.1100038 pixels per cm. Correct would be 118.1100038 * 2.54 =299.9994097 dpi (300 dpi), Affinity Mac calculates 46 dpi, Affinity Windows 23 dpi. Edit: What I initially thought was a difference between Win and Mac may also have another cause (see examples below)
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