Canon CR3 RAW files and this doesn't happen with every file but random files and always when the lens is wide open i.e 24mm. Some files when you open them in Photo have dark corners, like when you take a photo and it's catching the lens hood. If you open the image in Canons DPP it's ok but in Affinity Photo or Photo in windows the corners are dark this is also the case for Apple. I have spoken to Canon they seem to thinks it's the third party software as theirs works ok. Has anyone else had this problem
