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Legacy Lenses Discuss the use of older lenses, using adapters, from the Olympus OM system, Leica M and R-series, and the millions of others too.

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Old 3rd August 2018
Mark_R2 Mark_R2 is offline
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Re: Lens Fungus

Originally Posted by Naughty Nigel View Post
LED's of whatever colour usually provide a very narrow and specific bandwidth of light which I doubt would be of much value in killing fungus.

The wavelength of UV LED's is usually close to visible light, and is intended for use with UV reactive pigments used in security marking and crack detection systems such as Ardrox.
Just to clarify any confusion, I was talking about 'white' LEDs, as commonly used to replace filament bulbs. IIRC, these work by either emitting in the UV, which stimulates emission from 3 colour phosphors to simulate the visible spectrum, or by emitting at short wavelength visible and using a complementary colour phosphor for the other part of the spectrum. The latter type do not emit in the UV.

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Old 3rd August 2018
Ricoh Ricoh is online now
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Re: Lens Fungus

On a tangent here, and probably worth of an entry at Pseuds Corner in the 'Eye, just had a thought, the light-bulb moment! The fungus could add a creamy effect to the images. And if the fungus is active and growing, no two images will be the same. Pack away the UV lamps and the formaldehyde!

on flickr
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Jim Ford (3rd August 2018)

fungus, zuiko

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