The Canonical Stuck Lens Information thread

Started Jul 15, 2006 | Discussions thread
Undah
Veteran MemberPosts: 5,296
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Ricoh pin removal {tag}
In reply to SelrahCharleS, Dec 9, 2007

SelrahCharleS wrote:

I put this lens on my camera and it stuck while I was twisting it on
about halfway before it locked into place... then I was able move a
little in either direction, but not very far... I'm guessing this is
a Ricoh mount lens from what I've read.

I found what happened was that there is an extra little pin on Ricoh
mount lenses that gets stuck in the auto-focus screw, because it
sticks out just enough to do that. This pin must be removed for the
lens to mount on your camera correctly.

This is the hole where the pin was, I had already removed it before
taking the picture and didnt feel like putting it all back together
for this thread, but you can still see where it is located.

AF screw, this is where the pin gets stuck.

To remove the pin from the lens, unscrew the four little screws
holding the mount on and take that off(you could possibly tape the
pin down or something too)

Then you flip the mount over so you can see the underside of it, and
you should see this. The pin is held in place by that little metal
flap. To remove I unscrewed the two little screws holding the flap
down(they had glue on them, but that gave away fairly easily), and
swung it out of the way. Then I turned it over to let the pin drop
out and reassembled everything(including the little metal flap).

Now this is all great and fine, but what if you already have the lens
stuck on the camera? Well its actually pretty simple to get it back
off...

First make sure the MF/AF switch is set to AF(this raises the
autofocus screw and pushes the pin up). Then get an automotive feeler
gauge or some other small thin piece of metal(credit cards are too
thick, paper is not strong enough), and stick it between the body and
lens near where I have the little red arrow(you can also look back up
at the other picture of mine so you know where the AF screw is at).
You will feel the AF screw when you run into it. When that happens
try gently twisting the lens off, if it doesnt work keep moving the
feeler around in there, and trying to twist the lense off... always
be gentle, dont poke or twist too hard, you will get it eventually.

After you get the lens off you can follow my instructions above for
removing the pin.

Once the pin is removed the lens can be mounted on your camera...

and you can start taking pictures;)

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