Leica SummicronDR 35mm on GF-1

I use mine sometimes but I put a strip of Teflon tape on the barrel so it won't go into the sensor. It works fine. Of course the bug eyes ya don't need.

 

Put the tape on the barrel just under the bottom of the lens head....
That way you can't get it to retract all the way..... an old guy showed me this trick but he used a rubber band....

 

I'm unfamiliar with it to but how else to describe it...
There's the base of the lens where it attaches to the camera...then there's the barrel...then there's the lens head....hmmmm, wonder if Leica sees it that way....

You got some good answers at RFF.....

 

I am a little confused as to why a collapsible lens should be an issue - since the film plane in the Leica cameras should be the same distance as the sensor in the Micro 4/3 cameras from the lens mount. If the lens does not touch the film why should it touch the sensor?

 

It probably won't touch but I'm old and do things old school ways.

 

Leica did not make a 35mm focal length lens in a dual-range mount. They did make 35mm Summarons and Summicrons with "eyes" for use on the M3. They look like the DR goggles, but provide a different function.

On collapsing lenses: the light baffles, diameter of the throat, and placement of the shutter can be different from the original cameras that the lens was made to collapse on. For example: I cannot collapse a Summicron 5cm F2 on a Canon P.

 

Thank You Brian.

 

Narnian asked about collapsing lenses on cameras, I wanted to address that concern as well.

I would not expect the extension on the DR to be so great as to not to work with an M-Mount adapter. There is not much in them. If some vendor decided to get fancy with interior light baffles, or something to address the crop factor, a problem "could" occur. It certainly would not happen with the M-Mount adapter that I have.

On the M8- the problem is the throat of the camera, behind the mount. Some use the lens in the extended position. My solution would be to buy a Type 1 Rigid Summicron with bad optics and to transplant the optics cell. The optics cell is identical between the Type 1 Rigid and the DR Summicron. It simply nscrews from the focus mount.