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Thread: how to do the math for speed film test

  1. #31

    Re: how to do the math for speed film test

    source was an article by William Mortensen
    I have a lot of Mortensen books and articles, never saw this technique. Do you know where/when this was published?

  2. #32

    Join Date
    Sep 2010
    Posts
    418

    Re: how to do the math for speed film test

    Perhaps you have Mortensen's "On the Negative". I know that in that book he gives details in the "Ring Around Method" of reading a negative. I took the photojournalism course at Boston University in the late 60s-early 70s, graduating in '73.

    This was all geared to 35mm technique. The instructor used and suggested Diafine for all B&W films. I wanted more and was starting to work with 120 film so I went across to the library and explored the photography books and it was there I found Mortensen. The photo-j crowd had their Diafine, and the fine artists at BU had Adams and the Zone System. At nearby MIT, Minor White had a big following. The mere mention of the name Mortensen was enough to get you black-listed, but his methods gave me prints I liked, so I persisted. The negative on the newsprint thing may have been from David Vestal, whose many articles I found very helpful.

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