I have the EF mount Rokinon 14mm that I use with the EF- RS adapter. I am thinking of shifting to Canon RF 16mm. While I will sacrifice 2mm, I want to shift for two key reasons:
1. Generally moving to RF mount lens from EF
2. Save some space and weight in my camera bag
Am not too fussed about the fact that the 16mm has autofocus, as it is not too difficult to use manual focus on R5. My question is, would I be sacrificing IQ by shifting to the 16mm?