Archived posting to the Leica Users Group, 1997/03/26
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Good Day Everyone!!! When we had the store, we cleaned a great many lenses with this fogging problem. My ex-partner still does. I think you would find that the "Winner" of the " most frequent fogging contest" would be the early F-mount Nikkors, and not the 50's & 60's Leitz lenses. What we have to remember is that these products are 35-50 years old, and all those years of polluted air take their toll on ALL surfaces, even those with the protection of being in the middle of a lens. Very few lens barrells seal the elements to any real degree. You don't notice it in the Contax or Nikkor rf 50mm lengths because they were sealed a little better as a result of the mount, but you certainly do in every other lens of that period, regardless of manufacture. By saying that the Leitz lenses have a propensity for fogging, you are asking us to believe that some surfaces of identical composition could attract pollutants in greater volumes than others of the same compostion. Flourite is Flourite, and static charges aside, I can't see why some flourite-coated surfaces could attract more pollutants than others. Just my opinion, set me straight on this if you wish. Thomas P. Myro Photology@juno.com