Future end of mirrorless compatibility with EF lenses?

[dpsaiz]

At what point do you believe mirrorless cameras will no longer be compatible with EF lenses? 

Or do you believe that all future canon mirrorless cameras will continue to be compatible with EF lenses?

I believe that at some point Canon will decide that beginning with a given model of mirrorless camera they will decide it will no longer be compatible with EF lenses.

I further believe that some mirrorless cameras will no longer recognize an EF lens by way of a firmware update.

I am wondering out loud.

What do you guys think? What are your thoughts?

[Philnick]

Considering that the EF and FL/FD lenses all mount the same distance from the focal plane, any adapter would have to have zero thickness or include a lens to compensate - which would compromise the image quality. (That could also be a way to adapt EF-M lenses to R cameras.)

Since the FL/FD lenses don't have the ability to either tell the camera what they are or how they're set and don't have motors for automatic aperture and focus setting, even if one had dealt with the above problem, they would have to be used in full manual mode.

I recently got an inexpensive FL/FD to R adapter that fits in the space of the mirror box the R cameras don't have (much like the EF to R adapters), and full manual is how I can use my FL 85mm f/1.8 on my R7 - my FL nifty-fifty doesn't fit on the adapter at all!

[deebatman316]

FD to EF Mount adapters require optics in the adapter because the flange distance is different between EF and FD. So they're basically 1.26x teleconverters.