Archived posting to the Leica Users Group, 1998/05/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks for the replies so far. I guess I forgot to mention a couple of things: > >What kind of a projection lens are you using?? Flat field or curved >field?? What kind of mounts - plastic or cardboard??? >Dick Hemingway >Norman, OK Flat field lens (Super Colorplan 2.5/90) and plastic mounts. These are CS type mounts. I've converted from regular trays to LKM trays recently. Anyway I was kind of careless and bought whatever mounts were available. One batch was particularly awful -- it has a tiny dot of glue or resin or somesuch on the top and bottom of the frame rectangle. While this is obviously supposed to keep the film straight it messes things up. I'll certainly stay away from those in the future. >Glass mounts have the problem that they enclose the film in an air pocket >which promotes the growth of fungus. I have also had problems with >old slides "sticking" to the glass. >Richard Urmonas >urmonas@senet.com.au Just what I heard, but then it really is only hearsay. No, wait: I can still recall some live evidence but that is from my early childhood in the late 50s / early 60s when my dad used to curse about slides in glass mounts having gone south. When Kodachrome and its factory provided cardboard mounts hit the German market he converted to those. On the other hand I have heard people say that these problems (fungus, sticking) are problems of the past, caused by inadequate treatment in processing, and that it won't happen any more nowadays. This seems to be confirmed by George Huczek <ghuczek@sk.sympatico.ca>: >I don't know about the fungus problem, never had it happen to me. I use >Gepe anti-newton mounts. I'd be interested to know how much image >sharpness I am sacrificing because of this. The ones I tried were Gepe anti-newton too. The glass has a somewhat grainy, milky look to it, but then in projection I don't seem to notice much of a difference. I don't think there is much of a sacrifice involved here. Dieter Stoll D-72127 Kusterdingen, Germany dstoll@tuebingen.netsurf.de Home fax: +49-7071-368520