It's qute likely not broken...
It's qute likely not broken...
I am the original poster about the need for three hands. Manually functioning the aperture on a Canon FD body is virtually impossible. There's a tiny pin in the very back of the lens inside the shelter of the breech ring. You have to depress that, and work the two levers on the back to see any aperture movement. In addition, you should have the aperture selector set to the middle of the aperture range.
Mounting it to a Canon Body and then opening the back of the camera and opening the shutter on bulb, and then turning the aperture ring will be the best test. Canon changed the Breechlock mount for the FL and FD lenses a couple of times. The last Canon FD lenses also did not have the big round lock ring, but rather locked into the camera by turning the whole lens.
This tricky interlock situation and the evolution of same, is vastly unlike other lens mount systems (the reason for the massive mount change on the EOS)
In fact, those people using the FD lenses as legacy manual focus lenses on digital camera's need to be very cautious to get an adaptor that engages this interlock system .
I sell a lot of Canon FD lenses, and this is always an issue. People contact me all the time because they can't fiddle around on the back of the lens with their pudgy fingers and see the aperture blades move. When they do as I say and mount it to a Canon body...works fine.
In many years of selling camera gear, I have only seen one Canon FD lens with an aperture problem. And on that lens you could not move either of the levers on the back. Jammed solid.
PS... Albinar... pretty sketchy.. no quality there.
