I updated my RP firmware to 1.4 and any new photos are now readable by OSX. Old photos are still incompatible, but at least everything from here on out will work.
According to this post https://support.apple.com/en-us/HT208967 it should be supported. However, it is not. This has been incredibly frustrating and has killed my workflow. I have sent feedback to apple, written on their forums. My friend has an R a...