The EF-M lenses would as a substitute be RF mount on this case. They may have the identical slim barrel measurement with a slight flare on the base to suit the larger mount. Some clown on this discussion board I am now blocking claims such a flare would kill gross sales for the lens line however I am unable to see how. Lenses have all the time offered superb getting massive in direction of the entrance so I do not see why the reverse can be the case. Similar to the digital camera, the lenses would not enhance in quantity, and I do not assume folks care in regards to the diameter of lenses of their backpack or lens shelf at house, however fairly the quantity.
So amongst these lenses, some might be small picture circle because the EF-M lenses actually are. However they might even have launched fairly quite a few modest primes–which my lens line concept would name shopper or road lenses–with full-sensor picture circles, for nearly the identical price as small-sensor-image circle. (As an illustration 24/2.8, 35/2, 50/2 or 85/2.8), the price of the optics themselves is tiny; more cash is unquestionably going into the lens barrel, IS sensors and motors, and so forth.) Since these lenses can be not just for the small-sensor cameras but additionally making ready the way in which for a possible full-frame sensor digital camera, they might afford to introduce a number of extra of them. As an instance. As to why the small-sensor shooter would need them? They’d solely be fractionally heavier or dearer to purchase. Nonetheless they’d in all probability have far much less vignetting. And this could maintain out the promise (to the extent the customers have been even conscious they have been shopping for full-frame lenses) that the lenses would proceed to have critical worth used, and that their system would proceed on for many years, in each methods defending their funding.
OK, at this level, we’ve an alternate-reality stuffed with RF-mount lenses (some with small picture circle) and RF-mount cameras with small sensors. If Canon by no means introduces the full-frame mirrorless, truthful sufficient, no actual hurt performed. Simply maintain making these small-sensor RF our bodies, sooner or later neglect the big-image-circle lenses, and simply assist this M-like RF ecosystem for many years.
However actually, Canon, they DID introduce the R with its full-frame sensor. And given the above technique, then from the very first day there’s be not solely a number of extra full-sensor lenses out there (lenses the RF lineup is sorely lacking immediately, thoughts you!) however a bunch of compact small-image-circle that, at a pinch, might be used on full-frame our bodies.
And word a particular capability such a lens would have: it casts a round picture on the full-frame sensor, however you needn’t crop it to a particular rectangle at publicity time. It can save you the entire picture, and in publish processing, take a standard 3:2 reduce, or a vertical 2:3. Or a sq., or no matter. If the digital camera wasn’t leveled you possibly can rotate the picture a number of levels with out dropping pixels. This may give a profit to utilizing a full-frame R physique with a small-circle lens that you just would not have with a small-sensor physique. In brief this mix can be mid-way between the present R and M traces in energy and determination.
I want Canon had gone down this street. I want I might simply put the 22/2 or 18-55 zoom on my R physique every now and then, after I wished one thing smaller in my backpack than my 24-120 however did not need to go purchase a complete second M outfit to have extra portability and extra importantly make investments the large time commiting the brand new system to muscle reminiscence, establishing the workflow, and so forth.