And gosh, as **I** already told you, Nikon paid a huge price for that as their autofocus sucked for a decade or two and their lenses had to be designed around the small aperture.
In contrast, no-one's illustrated some huge price that Canon would have had to pay by making the EF-M mount simply the RF mount albeit perhaps with the EF-M film-to-flange distance. Sure its a few mm bigger, but I don't think big enough that the cameras or lenses would be notably bigger or bulkier or more expensive or heavier. If I'm wrong about that, please tell me which M model or EF-M glass would no longer sell if it had an RF mount. But please stop just ignoring what I explained now several times and continue citing the false example of Canon as a company that retained a mount and paid a price. (That would be a parallel if Canon, instead of making the EF-M the size of the RF mount, instead continued using the inappropriate EF-M mount for the R series bodies. They'd have a bad electronic bus and small mounting aperture, both of which would cripple the system.)
OK, that was pretty funny :-D
- Thanks, finally some numbers to work with.
You got me. The M2 would be 4mm taller, less than 2/10" in America-speak. That would of course let you cram just that much more hardware inside vertically, making the camera a bit narrower and/or shallower, no?
YES BUT ONLY BECAUSE THE M LINE WASN'T THE R LINE. You're presenting the fact that Canon did the very thing, the stupid thing, I'm arguing against, as an argument that they had to make that decision.
In the EF world we had one system from pros to neophyte weekenders. People are arguing here that somehow Canon is clearly thought this all through and for THIS era, with LOWER sales, is magically maximizing profits with TWO SEPARATE SYSTEMS, and yet the same camera company with, you'd think, the same brainpower, thought in the PREVIOUS era, when sales were much HIGHER, that ONE system would serve everyone.
Just to be clear what I'm saying would have been smart:
- When introducing the M system, give it the dream FF mirrorless mount. Basically the RF's diameter and system bus. Flange distance could be the EF-M's 16mm (18mm??) or the RF's 20mm, I don't think it matters too much. As you say, some M bodies might have been 4mm taller and correspondingly narrower or shallower. I can't imagine that would have torpedoed sales.
- In addition to lenses with a small image circle, make a few more lenses like 24/2.8, 28/2.8, 35/2, 50/1.8, with full image circles. "Don't bother telling anyone" as it doesn't start to matter until the R body comes out.
- R comes out, with its initial 3-4 lenses... but it turns out, hey presto, another 4 lenses long used by M shooters work full-image on the R! And all the small-sensor ones do too! And if you choose to use those with the small image circle, then you can shoot now and tweak framing later. Take any shot and make it a vertical shot. Or make it square or 2:3 or 9:16 or 4:3 without wasting pixels. Or rotate it a few degrees to straighten up the angles without having to throw away pixels. The result is that an 18-55 zoom on the M works on the R and gives you the same MP as the typical M body and same "reach", when that's convenient for you. And when not, then use big-boy full-frame lenses.
- Meanwhile put any of your big-boy full-frame lenses on your M body. Maybe you're backpacking but want that pro-quality macro, or what have you.
Right, and if some M models need to be a couple mm taller, they can then be a couple mm narrower or shallower. You seem to be thinking I'm demanding more volume inside the camera. Not at all. Likewise you say the RF mount is 54mm and EF-M lenses typically 60mm in diameter? In other words the lenses wouldn't be any bigger at all, would they?