Archived posting to the Leica Users Group, 2001/05/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Don't modern lenses employ cements that are UV repellent? If so, wouldn't that prevent the healing rays from reaching fungi inside the lens? Allen Zak In a message dated 05/23/2001 2:45:54 PM, you wrote: <<Hi, >Apparently the fungi in lenses, etc. cannot survive exposure to UV light. In >the past, when I lived in a hot high humidity area, I used to make sure that >all lenses were regularly exposed, caps off both ends, to some good old >daylight. I never had any problems. I have been told, but have no >confirmation, that one can also use a UV tube to achieve this effect. >Perhaps someone else on the list has tried this or knows what strength of UV >and for what length of time would be required. Makes sense. In clean room water supplies UV light is used to kill any bacteria/fungi in the water. Dunno the intensity of the UV light, though. Tom >>