Canon 70-200 f/2.8 focusing problem

Discussion in 'Canon' started by Bruce Chang, Dec 16, 2004.

  1. Bruce Chang

    Bruce Chang Guest

    So I just bought the 70-200 and it was used.

    My question:

    The focusing ring won't do anything when the focus is set at 2 or lower.
    You point the camera at your subject and push the shutter button to focus
    and it just sits. It doesn't search, nothing. Once you manually turn the
    focus ring past 2, it starts to search and focus like normal. I assume this
    isn't normal operation. Can anyone confirm this? And if it isn't normal
    operation, does anyone know what might be the problem?

    Thanks in advance.

    -Bruce
     
    Bruce Chang, Dec 16, 2004
    #1
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  2. Bruce Chang

    Capture Boy Guest

    What camera body is the lens attached to?
     
    Capture Boy, Dec 16, 2004
    #2
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  3. Bruce Chang

    Bruce Chang Guest

    It doesn't matter which body it was attached to, I tried it on a D60, a 10D
    and a 1D and the lens acted the same. I know the 10D and the 70-200 has
    some kind of backfocusing problem but that's a separate issue from this,
    isn't it?
     
    Bruce Chang, Dec 16, 2004
    #3
  4. Bruce Chang

    JME Guest

    On the 70-200 is there not a switch to focus 1.5- inf. or 3-inf.
    If I select 3-inf and manually focus down to 2 meter it will do nothing
    until I change my settings of manually focus above 3 meter..
    Just a thought....
     
    JME, Dec 16, 2004
    #4
  5. Bruce Chang

    Bruce Chang Guest

    That's exactly what it's doing. I suppose that is normal operation then?
     
    Bruce Chang, Dec 16, 2004
    #5
  6. Yes. This prevents the autofocus from going through the whole mechanical
    range when trying to adjust if you know that the target object is more
    than 3 meters away. Makes it faster.

    P.J.
     
    Peter-Josef Meisch, Dec 16, 2004
    #6
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