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Thread: how to calculate exact bellows compensation

  1. #11

    Join Date
    Dec 2017
    Location
    Europe, Switzerland
    Posts
    234

    Re: how to calculate exact bellows compensation

    Quote Originally Posted by Pere Casals View Post

    As you want exactitude ...

    Know the Real Focal your lens ...

    Know your Effective bellows draw ...

    Tele and Retro lenses ...

    If not using flash, use a shutter tester,...
    I couldn't agree more! I would add that you should also develop your films yourself then. You should do some more tests first.

  2. #12

    Join Date
    Sep 1998
    Location
    Buford, GA
    Posts
    13,388

    Re: how to calculate exact bellows compensation

    Quote Originally Posted by Daniel Casper Lohenstein View Post
    I couldn't agree more! I would add that you should also develop your films yourself then. You should do some more tests first.
    Or use a Rodenstock pocket calculator that quickly and easily, as well as accurately, determines exposure correction based on the image ratio and doesn’t require bellows length or focal length.
    It was also sold by Sinar and Linhof. Fits in a shirt pocket, no batteries, also computes Scheimpflug and DOF. Works for all camera formats from 35mm full frame to 810.

  3. #13

    Join Date
    Jul 2008
    Location
    London
    Posts
    113

    Re: how to calculate exact bellows compensation

    Thanks for all the replies

    Dan by optical centre I mean nodal point and I think I will mostly be using a 210mm macro sinaron

    the image plane meter looks interesting I have the potential for that as my Sinar has a "metering back" but I don't have the probe or meter
    dose any body have these ? dose it measure continuous light or just flash ?
    I light with continuous light

    Bob the Rodenstock calculator looks very interesting and it looks like Linhof and studio has them in stock

    best

    robin

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