If you have ever lived in Florida you will understand that there are
millions of fungi that flourish in full sunlight.
Chuck Norcutt
robburn@xxxxxxxxxxxxx wrote:
> http://www.temple.edu/biomed/tt3.html
>
> A few years ago I read an article by someone who claimed to have destroyed
> fungus on a lens element by opening the lens to the widest aperture and
> placing it in a position where sunlight could shine through the lens. The UV
> rays kill the fungus. He claimed that it worked well if the fungus was not
> too
> advanced. I tried it on a lens with a slight fungal bloom and it killed the
> fungus. I have had the lens for several years now and have had no further
> fungal growth. It would be advisable not to allow the lens to get too hot.
> Wouldn't want to risk messing up the cement binding lens elements. The site
> above makes a brief reference to this method, but doesn't think it effective
> on a badly fungused lens element.
>
> Robert
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