Question about Ultra Violet and enlarger lenses

Discussion in 'Toronto' started by Marek Warunkiewicz, Jan 4, 2010.

  1. Marek Warunkiewicz

    Marek Warunkiewicz Member

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    Does anyone know if enlarger lenses eat up Ultra Violet light or do they transmit them?
     
  2. Bob-D659

    Bob-D659 Member

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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. Ian Grant

    Ian Grant Subscriber

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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. Marek Warunkiewicz

    Marek Warunkiewicz Member

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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. ;-)
     
  5. jgjbowen

    jgjbowen Member

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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,