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Leica M to LTM lens mount conversion?
Old 11-11-2016   #1
cloak.dagger
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Leica M to LTM lens mount conversion?

I was wondering if anyone has tried this.

I love my Canon rangefinders, but since there's no fast 21mm, I thought of converting the Zeiss ZM to LTM. If that's possible...

Any hints would be appreciated!
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Old 11-11-2016   #2
johannielscom
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Interested if it were possible. The new model Nokton 50mm 1.5 would be a great contender for conversion to LTM. That lens would be so cool on a Barnack!
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Old 11-11-2016   #3
raid
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I would buy the ltm version Nokton 50/1.5 and save some money.
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Old 11-11-2016   #4
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Quote:
Originally Posted by raid View Post
I would buy the ltm version Nokton 50/1.5 and save some money.
But the LTM version is overweight on a Barnack (52mm filter thread!), the M-mount version converted to LTM would be just perfect...

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Old 11-11-2016   #5
sepiareverb
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The Contax G Biogon should likely be adaptable to LTM. I have a very nice one in the classifieds too...
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Old 11-11-2016   #6
mpaniagua
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I dont think it would be possible using an adapter. Flange distance of LTM is 28.8mm and M is 27.8, because the M mount bayonet is on the way; it would involve removing the M mount, but who knows? there are lots of clever people around there
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Old 11-11-2016   #7
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The M mount would have to be removed and then replaced with ltm.
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Old 11-11-2016   #8
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There are a number of older Leica lenses in M mount that are actually LTM lenses with a factory installed M mount. You can remove a tiny screw and carefully break the adhesive (by turning I suppose) to remove the M mount part, leaving you with the LTM version of that lens. In every case, there is a native LTM version of this lens that was also produced and sold, but because the native LTM versions were produced and sold in smaller numbers. Thus, they seem to cost more on the market due to rarity. Also, the M-mount versions of these lenses had markings on the barrel for closer focusing (often 0.7m vs. 1m on the LTM version). Meaning....a purchase of the old M-mount lens, then removing the M mount, and ending up with an LTM lens is a seemingly good value. I've only done this with the 35/2.8 summaron. I've seen 21/4 super angulons with this configuration. Have not seen the 21/3.4 with a removable M-mount though.

And, save the M mount. Clearly! It may come in handy in the future with either your own M-mount body, or if you sell said lens; a wider market of M and LTM users.
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Old 11-14-2016   #9
kaiwasoyokaze
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Quote:
Originally Posted by cloak.dagger View Post
I was wondering if anyone has tried this.

I love my Canon rangefinders, but since there's no fast 21mm, I thought of converting the Zeiss ZM to LTM. If that's possible...

Any hints would be appreciated!

the fastest 21mm that comes to mind for LTM is the GR lens 21mm 3.5.

i would know, cause i have one in black

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Old 11-14-2016   #10
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Quote:
Originally Posted by kaiwasoyokaze View Post
the fastest 21mm that comes to mind for LTM is the GR lens 21mm 3.5.

i would know, cause i have one in black

this one is faster
http://www.klassik-cameras.de/Avenon.html
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Old 11-14-2016   #11
cloak.dagger
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Quote:
Originally Posted by jonmanjiro View Post
My understanding is that this lens doesn't work on Canon RF cameras because the the rear nodal point. =/

Trust me, I've thought about it!
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