Greetings,
The Canon Control Ring or Canon Adapter > EF to EOS R are the best options. Buy one now, because its rumored the price will be increasing $50 starting next week.
https://www.usa.canon.com/shop/p/mount-adapter-ef-eos-r
Control Ring Mount Adapter EF-EOS R (canon.com)
~Rick
Bay Area - CA
~R5 C (1.0.9.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800 +RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw/MF656Cdw ~Pixel 8 ~CarePaks Are Worth It
