nathanbarlow wrote: excalibur wrote:
Well the Canon FDn lenses off camera look like they have a stuck iris, with the fd ones you can operate the blades\iris....if you have the fd lens you could try operating the levers at the back and hope the blades eventualy free (less boring if you watch the television at the same time). I do this with one lens (non Canon) as if not used the iris sticks
Hi thanks for your suggestion.
When the lens is off the camera, it is still on the adapter, it looks like it still stuck, even though the adapter part will be "fooling" the lens into thinking it is still mounted on a camera.... But when I take the adapter off, the levers on the back of the lens dont move? I assumed this is because there is a safety mechanism or soemthing, for when the lens is not on the camera body? Should they be moving freely? This might be my problem?
What I am seeing, is no iris movement, when moving the aperture selection ring, and my photos taken with the lens (and light metering) confirm that my photos are at f/22 or so.
On the FDn lenses and not on the camera or not with a back adapter...nothing moves (not even turning the aperture ring). The FD lenses which are breechlock there is not a problem doing a very simple dodge and is to press in a little pin and just turn the locking ring a short way, that allows the levers to move.
Have you a film camera you could try the lens on? Or maybe a handy camera shop that has some Canon film cameras? If it doesn't work on a film camera then the blades must be sticking.
Last edited by excalibur (2016-04-24 08:32:14)
Nikon FM, F90x, EM, F90x, Canon AV1, A1, T70 & T90, Minolta X-700, SRT101b and AFZ, Pentax S3, Fuji STX-2, Practica MTL3, TL5b, BC1, Chinon Chinon CE, Konica Autoreflex TC, FS-1 & C35, Yashica T5D, Olympus OM2, Contax139, Ricoh KR-10, Bronica Etrs, Mamiya RB67 pro AND drum roll:- a Sony DSC-P92
.........past gear Tele Rollieflex and Rollei SL66.