RF50mm f/1.8 STM vs EF50mm f/1.8 STM: 6 Key Comparisons
Amazon.com : Canon EF 50mm f/1.8 STM Lens International Version (No Warranty) : Electronics
Amazon.com : Canon EF 50mm f/1.8 STM Standard Prime Lens with Essentials Bundle Including: 49mm UV Filter, Padded Lens Pouch, Lens Cap Keeper, and Lens Cleaning Pen : Electronics