Patent: Canon RF mount Big White Lenses


Wildlife Shooter
Aug 8, 2018
Interesting that they all are listed as longer than the EF mount versions?

I'm guessing that the design for telephoto lenses stays pretty similar except that they basically have a built in RF adapter to bridge the extra backfocus, but I'm sure there's not much Canon can do about that in those designs
So, I wonder if there is any way Canon could do a collapsible lens design to use all that empty space? The problem would be the size of the front element AND reliability for pro shooters. The RF 600/ 800 ARE PRETTY MUCH THE SAME DIAMETER FOR THE ENTIRE LENS WITH A MUCH SMALL ER FRONT ELEMENT. Where are the DO’s?
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