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Thread: Press Focus Problem

  1. #1

    Join Date
    Jun 1999
    Posts
    78

    Press Focus Problem

    I seem to have a problem with the Press-Focus function on my new Nikkor 90mm/F8. The Press-Focus switch opens the lens to the pre-set f-stop rather than wide op en as I expected. Is there something obvious I'm missing?

  2. #2

    Press Focus Problem

    Arthur:

    If it's in a Copal shutter, this is the way it's supposed to work.

    Brian
    Brian Yarvin
    Author, Educator, Photographer
    http://www.brianyarvin.com

  3. #3

    Join Date
    Jun 1999
    Posts
    78

    Press Focus Problem

    Yikes! That's my mistake. I thought the Press-Focus function opened the shutter wide, regardless of its setting, like the automatic function on my Graflex Super D.

  4. #4

    Join Date
    Jan 2001
    Posts
    128

    Press Focus Problem

    Arthur:

    Actually, the Preview Lever on the shutter does open the shutter wide open. It is important to realize that the shutter and aperture diaphragm operate separately. When preparing to expose a neg, don't forget to set the aperture diaphragm and/or to close the shutter before pulling the darkslide and tripping the shutter. Either way, you will ruin a neg. Believe me, I know all about making those mistakes as do probably everyone else working in large format.

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