35-85 f1 IS USM Pancake. No external retractable parts. $10
you got me thinking!
this would be really hard to make. 85mm and f1 means a HUGE front element so I don't think it will fit under the flash bulb when it is a Pancake
I think it would have to look like the end of one of the big white,but then there comes the mount! I think it will look really odd/funny!
back to thinking: why does lenses have to be round? every not rotating element could have its top/bottom and side parts cut of to match the sensors 3:2 format or not?
wouldn't that make a 400mm 2,8 significant lighter?
it would look odd, but I could life with that.