I agree. What I said is that EF lenses may loose some things in comparison with RF lenses – right now it's the high speed display mode (no big deal). What this means for future fast communication demanding things is unknown.The RF protocol is an enhanced EF protocol. No EF lens loses anything it can do on an EF camera when it is used on an RF camera instead. Nothing.
Thanks for clarifying. Do you think it makes sense for Canon to sell three versions of 50mm lens in RF mount?EF 50mm f/1.8 II was a best seller long before digital EF mount cameras, and thus APS-C format EF mount cameras, existed.