Leica LTM Leica IIIg

Leica M39 screw mount bodies/lenses
Nick De Marco said:
Roger - maybe you are correct - I had read the reason for the continued production of the III was because people with LTM lenses wanted to keep their system. I have no idea whether LTM-M adapter were avaialble at the time or later - but it seemed a rational reason for the production of the III. Maybe Leica was just doing then what it did when it made the MP more recently? And if so, all power to them - both nice cameras
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The M3 was deliberately made with a flange/film register 1mm smaller so that screw mount lenses could be used, and adapters were available from Day 1.

Cheers,

R.
 
Indeed it would appear that some early M lenses had permanently attached ltm to m adaptors. By this I mean the 90mm Summicron, not the 2.8 Summaron which confuses me.
 
Dralowid said:
Indeed it would appear that some early M lenses had permanently attached ltm to m adaptors. By this I mean the 90mm Summicron, not the 2.8 Summaron which confuses me.
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Why does the Summaron 35mm f/2.8 confuse you? I have a 35mm f/2.8 Summaron with a removable ltm to m adaptor attached to it. It focuses to 0.7 m. It has a raised red dot wich is fixed to the barrel and not to the adaptor. I have another 35mm f/2.8 Summaron, but now with goggles, wich also has a ltm to m adaptor (to wich the goggles are attached) but without a red dot (this is fixed on the adapter). It focuses to 0.65m. I have a chrome 90mm Summicron with an ltm to m adaptor attached to it, but it cannot be removed. That one too has a raised dot on the lens barrel, not on the adaptor. Now who is confused? You or me?

Erik.
 
Erik,
My M mount Summaron 2.8 (1679415) has the dot on the barrel, focusses to 0.7 and three grub screws. If I loosen those screws do I find myself with an LTM lens?

I've read about this before but never investigated...I guess there is only one way of finding out???
 
Ah no, I correct myself. The single little grub screw in what would be the adaptor.

Looks like I now have an ltm Summaron!
 
Ltm vs dual mount summaron: check this link
BTW, not all M-mount summarons are dual mounts. Only a few wer made this way. The same holds for the contemporary 35mm Summicron (8-element).
 
HuubL, yes that's it. This afternoon I managed to undo the original adaptor (it was very stiff and looked as if it had never come off before), and have tried the lens on an LTM camera...all appears to work as it should though of course the lenses focusses closer than the ltm rangefinder can.

I've put it back together and it is now back on my M6, where it belongs.

Strange really, I have had this lens for almost 20 years...
 
Michael,
My Summaron 35mm f/2.8 has nr. 1627820. It also has the tiny grub screw wich holds the adapter. It works fine as a screw-mount lens, but it looks odd on a screw mount camera because of the red dot.
These very early Summarons 35mm f/2.8 are very lightweight. Mine is 134 grams. The later ones are heavier. I think these very early lenses belong to the earliest M2 cameras.
The latest m version of the Summaron 35mm f/3.5 weights 192 grams and is truly a mechanical marvel, comparable to the first rigid Summicron 50mm f/2. On mine, 1564204, there is no m to ltm adapter present. As they only focus to 1 m, I think they are intended for use on the M3. On the M2 they bring however the correct frame in place.

Erik.
 
Erik,

You are right, this Summaron doesn't look right on a screw camera. The 3.5 Summaron is a lens I have never tried.

Michael
 
Just out of interest, how rare is the Summaron with the M & LTM mount. I have a V1 35mm Summicron with the same grub screw, does that mean that it is M & LTM mount also??

Is that a rare lens? Any info is much appreciated!

Sorry to hijack the excellent IIIg thread...!

Regards,

Simon
 
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