135mm Tele-Elmar works on 1 of 3 cameras

[semi-ambivalent]

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I just took delivery of a 1st version Tele-Elmar that focuses fine on a new MP but fails on (initially) one, but then both of two M3s. All these cameras work fine on all my other lenses. I discovered (with a cable release and 'B') that the focusing cam rollers on the M3s were just high enough that the focus arm was slipping under them rather than riding on them. I'm guessing past repairs on both the M3s had bent the roller arms up a bit. Possible? Is it wise to attempt to bend one of the arms down a bit? The black coating on the lens's cam is worn off on the leading edge of the outside face [pic], suggesting that this piece might be bent down, but it feels pretty stiff and the lens shows no other signs of trauma. The rest of the lens is in excellent shape and the glass looks perfect. I'd hate to have to send it back. What might be some options?

 

thanks!

s-a

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[Michael Geschlecht]

Hello S-A,

 

Placement of the roller arm on M3's was done using a different set of parameters than the parameters used for later M's.

 

You might have someone who knows about such things look at the roller & arm placement before starting to bend things either on the lens or in the camera.

 

Just 1 image shows, by the way. It is a photo of the cam & the base of the lens.

 

Best Regards,

 

Michael

[semi-ambivalent]

Hello S-A,

 

Placement of the roller arm on M3's was done using a different set of parameters than the parameters used for later M's.

 

You might have someone who knows about such things look at the roller & arm placement before starting to bend things either on the lens or in the camera.

 

Just 1 image shows, by the way. It is a photo of the cam & the base of the lens.

 

Best Regards,

 

Michael

Michael,

 

Thanks for the reply. I attached only one image, to show the wear on the cam. I think the use of the word "images" is the web page's thing. FWIW, I have already replaced the original image with one where I actually remembered to use Zealous Crop in Gimp.

 

I will add that the cam (follower) wiggles a bit in the block that holds it; just enough to let its edge drop below the camera's roller. If there aren't loose screws then a bit of shimming might be all that's required.

 

Thanks,

s-a

[Michael Geschlecht]

Hello S-A,

 

There should not be any wiggle.

 

Best Regards,

 

Michael

[jerzy]

Firstly i would check the lens, if the shaft which touches the roller is not bent inward or lose. There should be practically minimal distance between the shaft and the lens tube.

Secondly check if the the screw holding arm is not lose.

and thirdly, the arm in M3 has a hole which can be used to adjust the height of the arm. Inserting screwdriver and bending the arm is how it is being done. You may want however leave this adjustments to repairman, viewfinder in Ms is a complicated and delicate instrument.

[semi-ambivalent]

Firstly i would check the lens, if the shaft which touches the roller is not bent inward or lose. There should be practically minimal distance between the shaft and the lens tube.

Secondly check if the the screw holding arm is not lose.

and thirdly, the arm in M3 has a hole which can be used to adjust the height of the arm. Inserting screwdriver and bending the arm is how it is being done. You may want however leave this adjustments to repairman, viewfinder in Ms is a complicated and delicate instrument.

Thanks for the reply Jerzy. The lens's arm does appear loose but I'm not touching it. It's going to Mr. Ye today for a full CLA.

 

Regards,

s-a