I think that these lenses are tough to figure out, fewer examples available and I am not aware of a lot of research into these lenses as done by Sonnar Brian, Rauber and others for the 5cm Sonnars and Jupiters. I have a three LTM J-9s and two CZJ- marked 8.5cm f2 lenses in LTM, but really do not have any idea as to how legitimate they are. The British writer P.G. Woodhouse would refer to them as "of uncertain parentage."I have two KMZ Jupiter 9 lenses from 1951. One is l39 and other kiev mount. The l39 one has a number on a rear block, but that number seems a bit poorly imprinted compared to how they usually are. So this probably is a fake number. Both of these two lenses have purple, yellow coatings, similar to my 1955 J9. Genuine czj and very early J-9 lenses(with czj optics) from that era have pale blue-ish coatings. Apeture blades are also different. L39 one has brown-ish and shiny baldes (I have a 1952 J11 ja a 1952 J3 with the same kind of shiny apeture blades) and kiev one have the usual matt blades as do the later KMZ J9-s. One little difference also cought my eye - l39 J9 has a matt name ring with a "N" before the number and the kiev J9 has shiny name ring with "№" before the number. Most of the very early J9-s I-ve seen on the web have just "N" before the number. What do you guys think, could there be a german made glass in those lenses or are the optics mostly/totally soviet made ?
I would not call the name ring on my three J-9s matte. I had to turn the lenses around to avoid glare in the early afternoon sunlight. Probably just an issue of of semantics, I would call the finish of name rings on my lenses semi-gloss rather than matte, kinda shiny but not high gloss. I will look at color of iris blades tomorrowOne little difference also cought my eye - l39 J9 has a matt name ring with a "N" before the number and the kiev J9 has shiny name ring with "№" before the number.
Rauber, I was already of the opinion that these lenses were irregular production or black market products. I welcome your thoughts on these two lenses! They are not badly made lenses, just not as smooth or nicely put together as real CZJ, Zeiss-Opton or Carl Zeiss products.@dexdog I finally had the chance to look at the pictures of the two 8,5cm Sonnar lenses. Unfortunately I have to tell you that in my opinion they were not manufactured completely by CZJ. Although the aperture scale, the focus scale and DOF scale show the typical CZJ numbers engraved the name ring is the issue here. Look at the serials and especially at the number 4 and 7. Compare those both numbers to other Contax lenses from CZJ and you will see the difference. The engravings of the serial number did not change post-war. The engraved serial on the name ring is not done by the Soviets. If you compare the serial with your Jupiter-9 lenses you will notice the difference too. No, this serial is engraved by a German engineer but not a CZJ one. I point to the German black market. But if you compare it with an Opton Sonnar you will see the stark similarities. Draw your conclusions.