Leitz Focotar 4.5/50 for Leica M
Old 03-24-2019   #1
Kent
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Leitz Focotar 4.5/50 for Leica M

Wait a minute! The Focotar is an old enlarger lens! How on earth would you use that on a Leica M body?

Well, like that:



By using a home-made helicoid adapter with rangefinder coupling.



But, does is work? Oh yes, it does:









Pretty sharp, rather low contrast and with a certain "glow" at contrast edges.

I really like it and it's a truly unique lens.
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Old 03-24-2019   #2
Ko.Fe.
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"By using a home-made helicoid adapter with rangefinder coupling."
Any chance to see more info about it? Please.
I have couple of miniature enlarger lenses, which I not use for enlarging, but it would be great to have them coupled with RF.
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Old 03-24-2019   #3
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This was a great idea and adaptation, Kent!
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Old 03-24-2019   #4
Kent
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Quote:
Originally Posted by Ko.Fe. View Post
"By using a home-made helicoid adapter with rangefinder coupling."
Any chance to see more info about it? Please.
I have couple of miniature enlarger lenses, which I not use for enlarging, but it would be great to have them coupled with RF.
It's rather complicated. I could never have done it on my own. The basic work Henry, a friend of mine, has done. He is some kind of lens tinkering genius.

It all started with a version for Sony NEX cameras. NEX adapter as a bayonet mount, a turned aluminium ring which holds the helicoid, basically a spiral walk and a taking ring with an M39 thread.

>> Here << Henry describes it in another forum.

He later tried a version for Leica M mount using a Leica M8 and trial-and-error. With this he was able to adapt a Rodenstock enlager lens to the M8.

But it didn't work with the Focotar which has a different flange distance.

Since I own an M(240) with live-view, I wanted to optimize it and get my old Leitz enlarger lenses working. I bought a Leica-version from Henry and tried to use different thread rings but none did work. I found out that I needed an 8mm one and Henry turned one for me. That worked out great and I could adjust it to the rangefinder.

It is necessary to say that this helicoid only works with a 50mm lens. Other focal lengths would need different thread pitch.

----------------------------
And my Varob 3.5/50 cannot be adapted, since it has the same flange distance as the Elmar 3.5/50 (which is optically the same). But I can use that one with a helicoid adapter on my Sony A7II.
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Old 03-24-2019   #5
Erik van Straten
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Many famous lenses are adapted nowadays for Leica M.

Here the Kinoptik Paris Apochromat. Not cheap, unfortunately. Mostly done in Taiwan.


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Old 03-24-2019   #6
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Yes, it is not cheap.
Alpa Kinoptik Paris Apochromat 150mm f/2.8 Lens Alpa Mount Rare E+
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$6,599.00
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Old 03-24-2019   #7
Emile de Leon
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I've used the Focotar on a Sony A7 w/a DOORX or 2 and a variable focus M to E mount closeup adapter coupled to a screwmount to M adapter....works very well and the Focotar makes a good macro lens..wouldn't use it for infinity though..

Here is a pic of my M3 taken with the Focotar..
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Old 03-24-2019   #8
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Sweet Optic! I Love “garage hot rodding” the Leica! Another Sweet lens is the Leitz F4.5 42 mm coated Mikro Summar. A bitsy little lens with a tiny optic that pulls off full frame wide angle with perfection. I have a one on my Working UR Leica and am in Awe of its images.
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