Changing aperture with DOF preview enabled

Discussion in 'Medium Format' started by william_hahn|1, Apr 24, 2002.

  1. Fellow Pentax 67 users,

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    When doing closed-down metering with extension tubes
    I find that I'm paranoid about changing the aperture
    of the lens with the Depth of field preview enabled.

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    My question is: does changing the aperture of the lens
    with the depth-of-field preview enabled damage the lens
    in any way? Or is my reluctance just another in a
    long list of irrational fears?

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    Thanks,

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    Bill Hahn
     
  2. Hi Bill,

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    There is no technical reason why this would damage the lens in any
    way!

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    Do not worry too much about technical stuff it is designed to be a
    tool for photography! and not the otherway around

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    Kind regards Gert Jan
     
  3. Bill, I've done this many, many times with every lens I use both on
    and off the camera. It has been completely safe.

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    Bob
     

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