Did ISCO have any connection with J Schneider Co.? (A fellow on an other list said he thought it was a cheaper lens sold by "J Schneider Co" (hence "JSCO").)
Cheers Beaker On Apr 17, 2007, at 10:28 PM, P. J. Alling wrote: > "J" is an old form of the letter I. in this case. Much as the old > from > of the letter s looks to modern eyes like an f. > > Beaker wrote: >> Pretty sure the lens says "JSCO-GOTTINGEN" on the front (can't check >> it, since I left it at work). Wonder if "JSCO" is a different >> (cheaper?) line of lenses. It is a machined metal bodied lens- looks >> like aluminum. I will try to clean and lubricate the little bugger- I >> suspect that old grease is its biggest problem. Best used as a >> training item. >> >> I mean to emphasize the "little" part. The lens contacts and focus >> drive are exposed when it is mounted on the camera. >> >> Thanks for confirming my first impressions. >> >> Cheers >> Beaker >> >> >> >> >> On Apr 17, 2007, at 9:58 AM, P. J. Alling wrote: >> >> >>> ISCO is a German manufacture of precision lenses. They made a >>> lot of >>> well respected of lenses for the Exacta, and later varying quality >>> lenses in M42 mount. The quality seems to run from just awful to >>> excellent, with build quality in the same range depending on >>> era. I >>> don't know if yours is one of the newer plastic body .lenses or an >>> older >>> machined metal version, but I doubt it's worth repairing. It >>> probably >>> isn't all that rare and thought there are really very few 50mm >>> lenses >>> optically terrible it's unlikely to be a sterling performer after >>> fungus >>> removal. >>> >>> Beaker wrote: >>> >>>> Hi- >>>> >>>> What is the reputation of JSCO-GOTTINGEN? >>>> >>>> I just bought a Westar 50mm, f2.8 lens, in M-42 mount, on e-bay. >>>> For >>>> $12.00, including shipping. Was curious about the lens, and he >>>> price >>>> was right. >>>> >>>> It arrived today, and I'm glad that is all I paid. Dosn't look like >>>> it is coated, it has traces of fungus, the iris is stiff, and focus >>>> isn't very smooth. Unless it is valuable enough to send out for >>>> repair, I think I'll use it as my first attempt at lens repair. >>>> >>>> Any favorite web pages that deal with lens repair? >>>> >>>> Thanks for your help, >>>> Mike Beacom >>>> >>>> >>>> >>>> >>> -- >>> Entropy Seminar: The results of a five yeer studee ntu the sekend >>> lw uf thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq >>> liot. >>> >>> >>> -- >>> PDML Pentax-Discuss Mail List >>> [email protected] >>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>> >> >> >> > > > -- > Entropy Seminar: The results of a five yeer studee ntu the sekend > lw uf thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
