Is this a 2x L39 teleconverter? If so, then the extender collar for the rangefinder should be Leica standard diameter. However the only 2x I have seen was for Leica, by Novoflex,and was said to work with all the lenses, no adjustment required. Most L39 converters have no couplings for the rangefinder.
But I cannot see any collar on this one, and as the front element sticks out a lot for a camera type 2X, is it a Barlow 2x extender for a telescope?....and happens to share the L39 thread. I do not recognize the trade mark.
An extender with L39 threads would probably be for an early Soviet SLR. TRouble is they have a different lens-to-film distance than the rangefinder cameras. I would be really surprised if it works--and even if it did it would be difficlt to zone focus.
If for the early Soviet, then it will not reach infinity on a Leica. It does not match any Barlow I can find on the net. Maybe it was a Japanese product like the early Tamron, a dedicated unit meant to fit just one lens. Stephen
Post by rickoleson on Jan 24, 2015 17:30:56 GMT -5
I've never seen one of those. It looks like it has RF coupling inside, which should be good for any lens you fan fit onto it. With the protruding front element it might have been intended to fit a particular long focus lens.
It has an RF coupling, that is what the 3 lugs are in the third picture. It is designed for the Leica standard register. Indeed any lenses I have tried it on focus just fine on my NEX with a standard LTM adapter. It matches and couples with the Industar 50 exactly and I wonder if it was designed for that lens. I can use the Industar 26, and the Industar 22 although, like the Elmar, the focusing lug gets in the way and it won't turn to infinity. My 90mm Elmar attaches but will not couple with the rangefinder. The circular 'collar(?)' is a little narrower than the Russians so it just misses. The Canon has a tongue which works on the rangefinder coupling and because this adapter has three lugs the Canon coupling misses them. I have tried it with the Canon 135 on my Sony and everything focuses as it should. Its actually quite good:
Canon 135mm lens at about 5 feet
With the extender
100% crop and auto colour balance
Last Edit: Jan 24, 2015 17:48:59 GMT -5 by philbirch
It is definitely a Russian 2x Teleconverter for LTM thread rangefinder. Stephen you can't see the 'collar' (which I assume the rangefinder coupling is called) because its sprung and defaults 'in'.
My original query was if it could be adjusted to allow the use of the Leica lenses. It looks as if there is room for the lugs to move in but they seem pretty solid to me. And I dont want to go poking into the three tiny holes round the barrel without knowing what I'm doing.
I understand this is an extremely rare item and the fact that Stephen and Rick have never heard of it confirms this to me.
But what is the manufacturer mark? Alfred Klomp doesn't know. Anyone got a copy of Princelle's?
Oh, I took off all the black paint someone had put on and it looks as good as new.
Anyway, I have a nice set of compact RF lenses to use on my Sony and a useful TC to go with them.
Last Edit: Jan 24, 2015 17:56:11 GMT -5 by philbirch
I can see how it works, after heavily processing the image! The prongs could be bent to suit, but risky. Komura made a RF coupling 2x, and Panagor made a non coupling for M39, but trademark is not listed anywhere I can trace. The mark may be a retailer like Porst, or Spiratone, a re-badged item. Stephen.
I've been doing some research, they are hard to find on the net. I have identified 7 different including mine. Alfred Klomp doesnt mention them, neither does the SovietCams site. I did find this post on Rangefinder forum. Full of useful info. The bit about flare makes me wonder if thats why the original owner painted all the inner surfaces matt black.
Made by Tochpribor in Kharkov, Ukraine. TK-2D means Tele Konverter 2X Dalnomernii (Dalnomernii means rangefinder)
Post by rickoleson on Jan 25, 2015 12:37:16 GMT -5
As far as I am aware, all Russian LTM lenses have a full circle rangefinder cam, whereas longer Leica and Canon lenses have a small tab. In addition to missing the coupling tabs on this teleconverter, the Canon/Leica design can have difficulties with mounting on Russian rangefinder cameras. If I had this TC, I think I might look for the Soviet equivalents to the Leica lenses I was wanting to use with it.
I'm more likely to use the TC on my Sony mirrorless, and probably only with the Industars on any of my RF cameras. Its useful and gives good quality images, better than any other TC's I've used. I'll do some outside shots with the different lenses. I am quite amazed at the image quality on my Sony (APSc), not sure what It'll be like full frame. I intend giving it a good test when I have time off work. in a week or so.
I now have a Leica and that's the camera I'm intending to use it with rather than my Russians. The Russian lenses couple up fine with it and it works great on the Leica. I was wondering about Stephens idea about bending the coupling tabs in, but rejected that as it would effectively make them a fraction shorter in the process.
No I'm happy with it as it is, and I know now, cleaned of paint and in better condition it will hold its value and I could make a good profit on its sale.
As an aside, apart from getting it as a collectors item, do not buy the Japanese Komura RF Leica fit version, it works but is rated as very poor optically. Even as bad as they are, they sell on Ebay for a lot of money. As I handled one, I also am sure that Novoflex once did a 2x with RF coupling for Leica. Stephen
Yes Stephen I have heard that too about the Komura. And it doesn't have RF coupling like this. The more I look into this the more I realise what a rare bird it is. Production figures are said to number just a few thousand. Mine is serial no 006007 and I have identified no's 002505, 002717, 003606, 005758, 005782 and 006299. So perhaps 6500 max?? How rare is that in the grand scheme of things?
They were made in the 80's for FED, presumably at Tochpribor or Techpribor (depending who you read) presumably because they were a specialist optical factory.
The general consensus of opinion as I read it is that it is extremely good compared to other TC's.
This lens was offered to me as I was looking at an Orion 15. Way cheaper but infinitely rarer. I can get another Orion. I'll be waiting a long time before I get another rarity like this so cheap.
... presumably at Tochpribor or Techpribor (depending who you read) presumably because they were a specialist optical factory ...
Techpribor (Техприбор) is a Russian industrial concern at Leningrad/St Petersburg (and Kaliningrad and possibly elsewhere), that have come a long way since 1942. Today they're into aviation, mining equipment etc.