MTC

Thank you for the info Walt and fde101, this is good to know. Cheers, Michael.

System: iMac late 2015 running 10.14.5 (18F132), Affinity Photo 1.7.1. Hello, I am editing .tif files (16-bit Mac Photoshop format tiff files) in Affinity Photo 1.7.1. I've noticed that after opening the files in Affinity Photo 1.7.1 and saving changes (no layers), that the size of the file on disk is reduced by approximately 50%. The number of pixels in the files and the file bit depth doesn't appear to change, just the size of the file on disk. For example, I had a 16-bit .tif file that was 102.8 MB on disk, I opened it Affinity Photo 1.7.1, I made a levels adjustment, merged/flattened the levels layer, did a command-s to save changes, and now the file size is 43.4 MB on disk. The number of pixels is the same, and according to the info window in the Preview app, the file is still 16-bit. This is happening with every file I edit and save today, and it never occurred previously. The issue does not occur when I save edits to the same files using Adobe Photoshop CS6 on the same iMac. Is this correct behavior due to a change in Affinity Photo 1.7.1? Or is it a bug? As I mentioned above, this did not previously occur (I've been using Affinity Photo this way for months now, perhaps over a year). I attached before and after screen shots of the Info Panel for one of my files. Thank you, Michael System: iMac late 2015 running 10.14.5 (18F132), Affinity Photo 1.7.1.