Difference between US aperture stops and regular aperture stops

Discussion in 'Antiques and Collecting' started by spoolman, Jun 6, 2009.

  1. spoolman

    spoolman Subscriber

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    I was recently told by the person repairing my Kodak #8 Premo plate camera that the aperture stops are US format and the crossover with regular f-stops is f16.Can anyone explain what the difference is between US stops and f stops?

    Thanks

    Doug
     
  2. Steve Smith

    Steve Smith Subscriber

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    If I remember correctly:

    US - 'Normal'

    16 - 16
    8 - 11
    4 - 8
    2 - 5.6
    1 - 4

    I have a Wray enlarging lens with the 1, 2, 4, 8, 16 markings.

    Steve.
     
  3. Sirius Glass

    Sirius Glass Subscriber

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    Thanks, I always wondered how the US system and the standard aperture system compared.

    Steve
     
  4. spoolman

    spoolman Subscriber

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    Difference betweenUS aperture stops and regular aperture stops

    Thanks for the information, Steve.It will help a lot

    Doug:smile: