.... *I think you meant to write "RF" lenses. I agree that EF lenses could easily go on for a very long time - Afterall, high quality glass is high quality glass and Canon are acknowledged as producing amongst the very best in the world. Rather like as they are with producing cutting edge blades. Let's not forget that Canon are Japanese. Besides, whether I am right or wrong, I don't think that Canon are on a mission to make EF lens users dump their D-SLRs but are simply taking advantage of new technologies (mirrorless in this case) to exploit and expand their whole camera range including not only stills/video EOS but also Cinema EOS systems. I don't understand those who seem convinced that every major corporation is on a mission to steal their money by every underhand means possible. I think the future will evolve organically and also with a pinch of market influences.