Originally posted by Serkevan To be fair, the change from FD to EF was *massive*, far more so than EF to RF. I can imagine that in 1987 (that was a bunch of years before I happened to be born) releasing a fully electromagnetic system would have been nothing short of a show of force. Nowadays, releasing the RF system is...Eh. Cool I guess?
The K mount and F mounts have migrated to all-electronic focus and aperture control without problem, so the real reason was for Canon to make more money by introducing a new platform.
So we're seeing that again, now.
It was rumoured that Canon have suspended EF designs for at least twelve months so the company can get behind the R mount.
If their sales continue to plunge as they have, that'll become their strategy - put up the white flag in trying to win new customers, squeeze their existing ones!
I'd be ropeable if I was a loyal Canon owner. (I do own several EF lenses that I buy to shoot on Sony - guess I win with their reduced market value, I can buy more).