The Apple Photos app sometimes corrupts images when importing from my camera. I just wanted to make a blog post about it in case anyone else runs into the problem. I’ve seen other references to this online, but most of the people gave up trying to fix it, and none of them went as far as I did to debug the issue. I’ll try to describe the problem, and the things I’ve tried to do to fix it. But also note that I’ve (sort of) given up on the Photos app too. Since I can’t trust it to import photos from my camera, I switched to a different workflow.