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Thread: Unusual F stop numbers

  1. #1

    Unusual F stop numbers

    I've noticed in some published photographs the notation of what seems to me to b e unusual F stops, for example Larry Ulrich's California poppies @ f/38, and Dav id Muench's Monument Valley @ f/28. I'm assuming this to be another way of expre ssing thirds of a stop?

  2. #2

    Unusual F stop numbers

    How pretentious, (or anal)!I wonder if they took the bellows extension into account when calculating the true f number?

  3. #3

    Unusual F stop numbers

    Yep, you got it. I have seen mainly European photographers using that system, probably the same reason they have metric and we fractions, and that reason would be...?

  4. #4

    Unusual F stop numbers

    How about a shutter speed priority automatic exposure camera? The obsessive part is recording that odd f stop!

  5. #5

    Unusual F stop numbers

    I like using the Uniform Scale (US) like on my Kodak Autographic Jr.. U.S. = N*N/16 where N is the conventional f number. The number is proportional to exposure.

  6. #6

    Join Date
    Oct 1999
    Posts
    154

    Unusual F stop numbers

    Michael, I am not familiar with the format used by the people that you have mentioned but would like to say that if the work is shot on 35mm using PROGRAM, it will use odd f/stops like that.

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