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Message: <blockquote data-quote="pdh" data-source="post: 92442" data-attributes="member: 583">Kristen I've done lots of googling in the past on this subject, and of course there are always contradictions, but the things I've found that sound most plausible to me are that1 All lenses have spores in anyway, from manufacture onward (fungal spores being so tiny it's very difficult to exclude them except in extreme clean room environments)2. fungus problems only really arise when the lens is in an environment which encourages growth - in essence, warm and humid (and sometimes cool and humid)3. like so many lens "problems" a few fungal threads on the glass is unlikely to be noticeable on the final image, though heavy damage (thick tracks or etching caused by the chemicals released by the fungus) could reduce contrast a bit.4. it can be cleaned but if there's etching it's permanent5. fungus definitely does spread from lens to lens5a fungus definitely does not spread from lens to lens.make of that what you will!when you say the camera has fungus what do you mean? I think if I had a film camera with a cloth shutter that was mouldy, I'd bin it - not necessarily because of the lenses, but because of possible silver-halide or dye-eating fungi. really we need someone from a lens manufacturer for proper advice, but I've never managed to find one commenti ng on this subject online. Brian's the closest we've got and he doesn;t seem to be about at the momentoh and 6. yes UV should stop growth but won't remove existing tracks.</blockquote>

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