Archived posting to the Leica Users Group, 1997/09/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I am one of those who prefers to keep a top-quality, coated or multi-coated UV filter on my lenses most of the time. I say most, because I do occasionally rake the UV off, such as when using another type of filter or when shooting where the sun is well in front of me. I don't believe the UV filter will protect the front element from "bashing". I do believe it will protect it from chemical and particulate contaminants which are in the air everywhere, always. I also believe it will protect my lens' coating from the cumulative effect of years of even the most careful, gentle cleaning. I am particularly concerned with those lenses which have huge (like 122mm or 160mm) front elements which would cost dearly to replace, and also those older, long-discontinued lenses for which a new front element might not be available any more. I suggest that anyone undecided on this issue should shoot a test roll of fine-grained slide film of various subjects in various light, alternating frames with and without the UV filter. Examine the slides on a lightbox with an 8x loupe. You will then have your own definitive answer to this most controversial subject. Doc