Patent: Canon RF mount Big White Lenses

[Danglin52]

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?