Old Sigma Zoom-Master 35-70 question

Discussion in 'Photography Equipment & Products' started by Diamond Dave, Dec 28, 2009.

  1. Diamond Dave

    Diamond Dave TPF Noob!

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    A friend just gave me an old (1985) Sigma Zoom-Master 35-70mm OM mount lens. When I depress the depth of field preview button on the side, I can't see the aperture stop down inside the lens (I've set it at its minimum, f/22).

    So the question is: is it broken? I don't want to waste time or film to find out.

    Thanks.
     
  2. Diamond Dave

    Diamond Dave TPF Noob!

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    Nobody?
     
  3. iolair

    iolair No longer a newbie, moving up!

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    What body are you using this on?

    I use old Sigma lenses (not *that* old, mind) on a digital Canon, and they won't let me stop down the aperture at all - I'm stuck wide open. Could be that yours has the same issue.
     
  4. Diamond Dave

    Diamond Dave TPF Noob!

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    On an Olympus OM-PC...but the lens won't stop down off the camera either. However, the Zuiko 50mm I have (OM mount obviously) will, just by depressing the DOF button, on or off the camera.
     

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