Now we see through a glass, darkly...
- Apr 5, 2016
Can Canon do that? Sure they could.What does "future proof" mean for a lens? If you buy a new EF-M lens today, I'd wager it will last as long as a new RF lens. Right now the main lens on my R is the Sigma 50 1.4 from 2008. The EX, not the ART. Sure it's old, but I don't see why that matters. It works great and fit my budget and needs at the time.
For tele glass adapters don't add length or bulk; from ~40mm on lenses tend to be the same length from the sensor. If a mirrorless lens longer than 40mm is smaller than its DSLR equivalent it's because of design differences.
I don't see how or why a higher end M body would change what M mount is about. It's not like an M7 would prompt the discontinuation of everything under it. Canon can and has done both and they can do it here.
Would Canon maximize profitability doing that? They don't seem to think they would.