For the R50, I'd strongly recommend starting with the RF 50mm f/1.8 STM. It's affordable (~$200), compact, and gives you excellent image quality for p...
RF 85mm f/1.2 L USM DS.
Canon EOS R50.
Canon R6 Mark II would be your best bet.
If you're looking for the best external flash for your Canon camera, here are some top recommendations based on performance, compatibility, and user r...