Archived posting to the Leica Users Group, 1997/03/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 08:47 AM 3/9/97 -0600, you wrote: >Dan Cardish wrote: >> >> At 09:27 PM 09-03-97 +0800, ADi wrote: >> >Hi, >> > >> >I have been placing my fungus infected lenses and m3 rangefinder under a >> >table lamp in the hope that the fungus may die. The reason why I am doing >> >this is that in the past, when I did not use a lens for a period of time, >> >some fungus started growing, when I started using it again however, it >> >noticably diminished. My hypothesis is that exposure to light kills the >> >fungus. Any comments?? >> > >> >Also, what can be done to preserve photographic equipment in high humidity >> >places like Malaysia?? Any ideas?? >> >> I have heard that UV radiation kills lens fungus. So exposure to sunlight >> would be preferable. Just make sure that you don't start any fires! ;-) >> >> Try getting a supply of silica gel packets and store them with your lenses. >> Make certain that you charge them up periodically to drive out accumulated >> moisture. >> >> Dan C. > >how do you'charge' silica gel packs >thnks... > Heat them up in an oven. Heat drives the moisture out of the silica gel. Then the silica gel will absorb more moisture. How long seems to be the problem. I have seen times from one hour to overnight. It probably depends on the size of the silica gel packet. I have one here that I got from packages of ICs that says 245 to 275 degrees F for 12 hours. One unit, I weighed it at 1.5 oz. Hope this helps, Dennis