I don't think you need special software to import images into a MAC. I normally just plug the photo card into the card slot on the back of my IMAC and PHOTOS - one of the native Apple apps - takes care of things. I've just tried using a USB connection and PHOTOS works perfectly with that as well. PHOTOS creates a date ordered catalogue for me and then if I need any editing I open Luminar. I only use JPG though - as an old film shooter I try and get it correct first time in the camera. Not sure how PHOTOS treats RAF.
Hope that helps
