This is with an a6500. I do not see thumbnails in the Finder. Perhaps I need to wait for an Apple update. I'm current now at 10.12.3. Also, I see this a6500 has a firmware update that I haven't yet applied......perhaps that's it?
Affinity Photo will not display thumbnails of Sony ARW files when using Focus Merge. I'd like to see the thumbnails so as to determine which batch of files to select and use with Focus Merge. I'm on a Mac and Cover Flow view would help me do this. I cannot use Cover Flow to select the files because Affinity is not generating thumbnails......