Canon LTM Anyone tried collapsible lens on Canon 7 rangefinder?

Canon M39 M39 screw mount bodies/lenses
M

Max 2.8

Guest
Just won a canon 7 from ebay. Thinking of getting a collapsible lens to make camera more compact, but read somewhere before the rear part will hit some light baffer thing in the camera.

Any advice or experience to share?

Thanks in advance :)
 
I shouldn't say anything as I don't have a 7, BUT I must assume that it has at least as much space as the P. The P can accept an Industar 22 if inserted gently. I put rubber bands on the throat of the lens to provide further protection.
 
I have both, Canon 7 - Summitar 50f2.0 and I felt resistance and did not push it in all the way and turn it. I was afraid to damage the back.
Joe
 
If you open up the camera and look from behind , you'll see that at certain position, the Leica 5cm lenses totally clear all parts of the camera. The best way to attached and remove the lens is in the extended position. After that, to collapse the lens fully, just turn it to the correct position and it will be fine to gently push it all the way in.

Cheers,
 
I don't collapse any lens in any camera. I never have a camera in my pocket unless it is a small light camera like a Minox GT or Olympus XA. Other camera sizes are better suited for a camera bag for me.
 
I use an Industar 50 collapsible lens on my Canon 7. The "tabs" lightly contact the baffles when retracting or extending the lens, but nothing serious. I always thread the lens on or off with the lens extended. The infinity lock slightly hangs up on the bayonet mounting flanges, but I have learned to lightly press the lock pin while focusing with my left hand to avoid the issue. The I-50 is very sharp, but a Fed 50/3.5 I tried was not. The Fed 50/3.5 didn't have the same issues of contacting the baffle or potential hanging up on the bayonet.

Ken
 
The no-no's are the 50/3.5 Elmar, 50/2.0 Summar, and 50/3.5 Canon/Serenar. As noted, if you set the lens at infinity, and turn just 60 degrees CCW and collapse, it's fine.

The ball-and groove mechanism on the Summitar and Summicron make them safe to collapse without thinking about it.
 
Well, it depends on what you mean by "collapse." When I had a Canon 7, I occasionally used a 50/3.5 Elmar w/ it, but always made sure there were a couple of elastic hair doodles (appropriated from my daughter) around the lens barrell to keep it from collapsing completely and banging against the camera's interior baffle. I still use this trick w/ the Elmar and Bessas. The lens doesn't completely collapse, but it gets close enough w/out doing any damage.
 
Hmmm seems 50-50...I'll get a industar 50 to try. if ok, maybe I'll get the summitar or elmar... to fulfil my dream of owning a vintage leica glass.
 
Some collapsible lenses will damage the upper wall of the light baffle (just below the focusing sensor) in any Canon rangefinder from the VT on. As one post suggests, open the camera back and set the shutter on T and slowly collapse the lens, but it doesn't have to come back far to do some damage.
Also from memory, any collapsible lens will damage the light baffles in a Minolta 35.
 
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