Archived posting to the Leica Users Group, 2000/11/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Excerpts from mail: 25-Nov-100 [Leica] Leica Users digest .. by Leica Users digest@mejac > But the blue (really blue) treatment of the lenses gives yellowish colors, [snip] How can this be? *IF* (if) the coating color is actually affecting color balance on the film (not usually), then, like a blue filter, a bluish coating would cause bluish results, not yellowish. I have two 50s-era Jupiter-9s, LTM and CRF, both of which have very magenta coatings, and neither of which affects the balance. OTOH, there are the early Thorium Summicrons, whose glass (not coating) leads to a warmer image vis-a-vis other optics. Puzzled in Pittsburgh, Stan Yoder