"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
