Archived posting to the Leica Users Group, 2000/11/25
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> > I've never used filters with my R lenses, and a couple of 'em are over 20 years old. My 400 f/6.8 (new in 1980) has slight edge separation but the front and back surfaces are still in perfect shape. My 90mm Summicron-R (used in 1980, probably 25+ years old) still has perfect glass. My 60mm Macro (new in 1981) also has perfect glass. What's there to worry about? In "normal" areas I agree. There is no need for a filter. However, I often photograph on or near a beach. In such situations where there is a tremendous amount of sand blowing into my lens, as well as salt spray, I would say a filter is mandatory. I would rather have my filter sand blasted than to replace a front element. I think the problems caused by a filter would be minimal compared to a minute or two of salt spray. Rob