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  1. #1
    Marek Warunkiewicz's Avatar
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    Question about Ultra Violet and enlarger lenses

    Does anyone know if enlarger lenses eat up Ultra Violet light or do they transmit them?
    Marek Warunkiewicz

  2. #2

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    Yes they will eat up UV as they are not made from quartz or UV transmissive glass, but how much depends on the wavelength.

  3. #3
    Ian Grant's Avatar
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    Normal optical glass passes very little UV light, special quartz based optics are used for lenses designed for specialist UV photography, most companies made a few lenses for medical, forensic and scientific applications.

    Ian

  4. #4
    Marek Warunkiewicz's Avatar
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    OK. I think that destroys that idea. I wanted to print negs to cyanotype paper... I thought that this was the case and before I went crazy thought I would ask the gods of photography. ;-)
    Marek Warunkiewicz

  5. #5

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    This has been discussed at length over on the Azo forum. A UV light source exists to enlarge on Azo paper. Late model Nikkor lenses are recommended because they pass much more UV light than Schneider or Rodenstock lenses.

    If you don't own a Nikon enlarging lens, see if you can borrow one to try with the cyanotype paper.

    Good Luck,
    John Bowen



 

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