What is all this talk about different "backs"? What exactly moves the sensor back and forth? And how is it more convenient to replace both that "back" and a lens, as opposed just have the adapter on a lens?
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Although currently used in certain digital cameras, backs were first a film body component. You swapped backs out for various film size needs or for certain cameras to switch from film to digital. Hasselblad is the main user of the design.What is all this talk about different "backs"? What exactly moves the sensor back and forth? And how is it more convenient to replace both that "back" and a lens, as opposed just have the adapter on a lens?
Except the mount in the front and the controls on top are the cheap things. A removable back would include all of the expensive parts, and would introduce a whole bevy of potential problems for sealing, just to save Canon (and the consumer) less than 100 dollars in manufacturing costs for the front of a camera.hybrid EF/RF mount - yes possible, technically. having a deeper back for EF flange distance and second one, a shallow one, for RF. you’d be able to mount both types of lenses without the use of an adapter."
it could well be a 1D style camera. or 5d style camera. or hybrid. with multitude of new possibilities including : EF/RF native compatibility and multi sensor options. I can create a loooong bullet point list of how such a camera may add value in a professional setting
AFAIK, the mount diameters are identical, and the differences are in flange distance and additional contacts. The adapter is just a 26mm extension tube with contacts, and the camera realizes an EF lens in mounted via an adapter via protocol and/or the additional contacts left disconnected.
Are the mounting lugs the same configuration?
In other words will an EF lens currently mount directly to a RF camera?
Not operate or anything but just physically mount?
They aren't. The RF lugs are even less rotational symmetric than the EF ones, the caps will only fits one way, so you have to pay attention when changing lenses.
I'm pretty sure Canon doesn't roll like that. I'm using both EF 5dsr and R now and the R is producing excellent results with mount and even better with RF lenses, especially UWA's.the R was obviously rushed and at the least an experiment. It was released in a beta state using an old sensor. pretty much an attempt to stop people from switching to other brands because of the mirrorless hype.
Buying an RP in my case was the plan with EF-RF and FD-RF adapter to reuse e.g. FD 4.0 17, 1.4 50, 2.5 135 and 4.0 300 which still exist in my household. But they got me with an offer where body + adapter at 1094 EUR which is very cheap anyway. But they added - and that is something I cannot believe antil the tools arrive - the RF lens as some free goodie . And there is 55 Euro cash back available after I reveive these things. Maybe the RF 35 is not selling very well and they want to convince the hesitating individuals (like me) to buy into RF mount and lenses.
I am not too happy to have a third mount around but the intended use is as one body two lens combo e.g. RF 35 + EF macro 100 or RF35 + 70-300 4.0. Or as two body combo e.g. M50 + EF 32mm + RP with 70-200 or RP with RF 35 + M50 70-200 if I need stabilized lenses.
And If I do not like the RF 35 maybe I will sell it and enjoy the lenses I already have but 1:2 macro + IS is still interesting. I will see.
And after using the FDn 4.0 17 for a test video with my M50 it showed very strong quality (as ~28mm equiv) so I cannot wait to see how this little lens performs on the RP for photo and especially video (1080p is enough for my purposes so this lens will be fine).
The lugs are different as people have pointed out but that's mainly to make sure the wrong lens is not mounted on the wrong system. If the pins are in two different places, there might be a rotational feature on the body to spin and lock it into EF or RF which could change the lug pattern? I think mechanically there are multiple ways to do it. I think this is an interesting approach, but it definitely only works on a mirrored sized body, so I think we'd only see it on the 1 series. But as Canon has said multiple times, the 6d, 5d, 5ds/r, and 1d bodies will not line up directly with the RF mount models. So this functionality might only be on their highest tiers.Are the mounting lugs the same configuration?
In other words will an EF lens currently mount directly to a RF camera?
Not operate or anything but just physically mount?
I wouldn't assume that. Canon will sell what sells, and there is little incentive for Canon to make big whites that work on RF mount cameras only.I assume Canon’s objective is to switch customers from the EF to the RF mount.