Okynek Paraphrasing Zoom: go to: http://zenit.istra.ru/qa/qa-logos.html Both lenses are from same factory in different epochs when they changed logos. The same argument applies to Mir 1 sch of today discussion Regards LP
Luiz if you find any mistakes in the description please do not hesitate to fix them. As well if you or any one else has better pictures please do not hesitate to replace my Both lenses were posted just to show small differences what I found on the lens and was puzzled by. History of the corporation VOMZ is all but uncertain to me. It briefly described in Russian here: http://www.vomz.ru/history/ Mr. Abramov has some information about VOMZ there: http://www.photohistory.ru/Factorys-logos.html VOMZ incorporated more then few companies located in different Cities. It was constantly reorganized and restructured. Probably management issues or to better accommodate for special projects. One time VOMZ was part of the LOMO. So possible exist Jupiter 21 with LOMO engravings.
who produced some of the J-21M lenses is the same physical entity as VOMZ.
"Luch" was part of the VOMZ Corporation. But possibly "Luch" located on different place or in other city and was relatively independed. Kind like Arsenal and Vega. This may explain unique name and hallmark. It also possible that this same manufactory after reorganisation. As far as I can say both lenses on the pictures was at list partially made by different machinery. It looks to me that at list 2 production lines existed. The only uncertaint if either lenses were in production at the same time in different places or they were produced on same place at different times (evolutionally changes -new machines and technology) or perhaps they were produced at different times and different plases (relocation)? More information needed on this.
Everything very interesting - and fascinating- but if you see for instance a Tair 3 FS from two Zenit ES or from two 12S or two 12XPS you will note several diferences on parts and engravings from each lens, they differ themselves as two brothers difers between them. These differences does not necessary prove these lenses came from different production lines. The Jupiter 21 is an old project; It is a variation of the Jupiter 11. Which itself came from Sonnar 135. Uses the same glasses and formula with according different curves to match the new focal lewngth.
Ye, they could be from same place. Who know with all this crazy changes what VOMZ corporation went though. May be some day we will find more information. For now I just removed all references about manufactories from Wiki to prevent liking of any disinformation.