Archived posting to the Leica Users Group, 2000/02/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In a message dated 2/25/0 8:07:26 AM, you wrote: >I recently bought an old focomat 1c enlarger whith the focotar lens. >It is a real pleasure to work with but I have a problem with >newtonrings. This is caused by the condensor which has no anti-newton >layer and has direct contact with the negative. >Leitz used to have anti-newton glas which is discontinued. >I tried to avoid contact between the negative and the condensor by >masking the 24x36mm image with tape but it did not work. >Is someone familiar with this problem ? >Thanks a lot in advance for your tips. >Greetings, >Frederik Boone fred, this problem is so common it is dealt with in the older leica manuals -- you have to cut a template out of sheet film or some similar substance that fits over the two pins on the negative stage, has slots for the two chrome allignment thingies, and a hole for the negative. Put that over your negative, re-calibrate the auto-focus (leica says you don't have to, but I did) and away you go, newton-ringless forever more. If you ask Leica in New Jersey they can send you a picture of the template, or check out a 1952 Leica manual, or e-mail me ur address privately and I'll send you a zerox, or xerox, whichever. charlie trentelman ogden, utah