It won't click. This is a breechlock FD lens. You turn the ring until it's tight. Later FDn lenses (with no ring) will click when mounted. but not FD lenses.
Jim B.
Something is not right w/ your camera. Look at the lil arm on the right inside the lens opening, it's supposed to be up. Yours is down, and a lens probably won't mount like that. Try firing the camera a few times and see if that arm will go down. Look at the pic below and you'll see what I'm talking about.
https://www.ebay.com/itm/Vintage-Ca...361375?hash=item46c554851f:g:CF8AAOSwH8ZgdgQC
Canon FDold lenses typically got an arresting pin that needs to be pressed before being able to twist their aperture ring off the A(utomatic) setting.The aperture rings are also not moving, on any of the lenses. Wasnt there a lever to be pushed or something? Its a change her Dad used it for his digital camera as well and i think this is where you have to press someting
With FDnew lenses their barrel is held tight by springs, with FDold lenses their barrel is held tight by a nut.It won't click. This is a breechlock FD lens. You turn the ring until it's tight. Later FDn lenses (with no ring) will click when mounted. but not FD lenses.
The latter have an automatic closing mechanism, that twists the breech-lock ring a tiny bit, so that the lens is provisionally fastened and just have to be tightened by hand.It's an earlier breech lock. Newer breech locks had a lock on the ring that held the locking ring in alignment with the
The latter have an automatic closing mechanism, that twists the breech-lock ring a tiny bit, so that the lens is provisionally fastened and just have to be tightened by hand.
But this is only a tiny advancement in handling and does not affect the basic breech-lock handling. Typically extenders, extension tubes and non-Canon lenses lack this automatic feature. It is not a matter of new or old.
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