A Roll of Random Spring Photos on Outdated Fujifilm Superia 1600

Here's a roll of outdated Fujifilm Superia 1600, shot most randomly with CanonFTb in April and May 2018, a few underexposed or blurry. I shot the film at ISO 1000.

3 Comments

  1. klawe
    klawe ·

    Very nice results! Is there a radioaktive Canon lense? ;-)

  2. herbert-4
    herbert-4 ·

    @klawe There were a lot of radioactive lenses from 1930's to 1970's. Canon example is Canon 58mm f/1.2 from 1964. Thorium oxide glass is a low level alpha emitter, and usually harmless, because alpha particles don't penetrate skin. Thorium glass is the highest refractive index glass there is. Old thorium glass lenses will turn amber (1-2 f/stops) over time. This is called actinic damage, and can be repaired by exposing glass to strong UV light for many hours, like days of direct sunlight in tropics. Watch out for thorium glass eyepieces. There is no skin your eyes and alpha radiation will damage your eyes. Almost every lens maker is guilty of thorium glass use. If you deal in lenses a lot, it pays to have a Geiger counter. Look up radioactive lenses: camera-wiki.org/wiki/Radioactive_lenses

  3. klawe
    klawe ·

    Thank you for the detailed information and the link. I did not know the problem yet. I had only heard of radioactive flower vase. Using Thorium glass in lenses or eyepieces was very bad!

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