EF-S on a FF sensor + camera obscura

[stigmundfreud]

This is what happend when I tried out a friends sigma 10mm fish eye. The lens would appear do be an EF-S lens which worked quite nice on the shoot



and this is what happens when you custom adapt a 30mm lens from a cheap chinese holga rip off and connect to an ef mounting bracket. Made up by using the back glass and then coverd with a plastic screw cap with a pen hole in the front. Focus by screwing in/out

[Famous Graham]

Interesting - I've got a couple of EF-S lenses that won't (obviously) fit my EF 1D. I used gaffa tape for reverse mounting my FD lenses, but I hadn't looked into reusing the EF-S ones.

/goes off to play

[stigmundfreud]

I think it has the ef mount but designed for the ef-s sensor. It hd a red outer locator blob but the inner blob was white which usually indicates ef-s

[SamHH]

Yes, from what I've read the Canon EF-S lenses have to be modified in order to physically fit on a camera that isn't designed for them. IIRC you have to grind down the rear of the lens.