albertk
Veteran
In the past I had a 1962 Jupiter-3 in LTM, that was impossible to focus consistently (front focus issieus well known because of different Leica body register). I had adapted it myself through some twisting to work superbly wide open. Unfortunately I sold it. I regretted it the day after. The day after blues. Have not gotten over it.
Then I bought an Amedeo adapter and a J-3 in Kiev mount. This is a superb lens, at F2 I can enlarge to 50x60 and see all sharpness I need. Absolute stunning for portraits. See next post. .
However I would like to have one [also] with full opening F1.5 focus at 1.5 meters.
So. I bought a new J-3 lenshead.
Question: how can I disassemble it? Then what should I turn, and how securely lock it in the right position once I find a good plane of focus?
I know I should better leave it to the professional. But I can try.
Now i tried to turn it at the outside: did not move.
Looking at the side I saw that the metal has been stamped at four places. Is this A primitive way of locking the barrel? Then it will be hard to open up . .
I definitely do not want to open the innner ring holding the rear parts of the lens.
Then I bought an Amedeo adapter and a J-3 in Kiev mount. This is a superb lens, at F2 I can enlarge to 50x60 and see all sharpness I need. Absolute stunning for portraits. See next post. .
However I would like to have one [also] with full opening F1.5 focus at 1.5 meters.
So. I bought a new J-3 lenshead.
Question: how can I disassemble it? Then what should I turn, and how securely lock it in the right position once I find a good plane of focus?
I know I should better leave it to the professional. But I can try.
Now i tried to turn it at the outside: did not move.
Looking at the side I saw that the metal has been stamped at four places. Is this A primitive way of locking the barrel? Then it will be hard to open up . .
I definitely do not want to open the innner ring holding the rear parts of the lens.
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