The whole cloud backup thing has been a hot topic for a while now as various services have been simultaneously killing off unlimited storage while others have been bringing it back and trying to outdo each other to win over your business. Amazon Photos is one such service that offers unlimited space as long as you have a prime account – including your raw photos. But it seems it’s not backing up everything – even if you think that it is.
Reddit user /u/somebodytoshove posted to /r/photography noting that the auto-save feature of the Amazon Photos iOS app has not been uploading the .raf files from his Fuji mirrorless camera. It thinks it has, and it looks like it has, but when you look at the uploaded files, they actually contain only the jpg preview.