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HELP! Iris stuck

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    IanA
    IanA  103048 forum posts England12 Constructive Critique Points
    27 Mar 2004 - 8:46 AM

    Has anyone any idea if the Iris on a 28-300 Sigma lens (old model) can be freed off, or is it a back to manufacturer job?
    The iris just seems to have stuck at f22 and won't open out again.
    Any clues appreciated.
    Ian

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    27 Mar 2004 - 8:46 AM

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    tim franklin
    27 Mar 2004 - 9:02 AM

    What mount is the lens? If its, eg a Nikon then there may be something or nothing fouling the mechanical linkages, in which case you or a competant local repair guy may be able to fix it (unless its more serious of course). If its eg, a Canon mount, then the linkages are electronic which may mean a trip to Sigma to sort it.

    IanA
    IanA  103048 forum posts England12 Constructive Critique Points
    27 Mar 2004 - 9:05 AM

    The mount is Sigma SA. I don't know if it's mechanical or electronic!

    tim franklin
    27 Mar 2004 - 6:02 PM

    Its electronic Ian. I still have a couple of my old Sigma mount lenses sitting in the wardrobe - really must get round to selling them!

    IanA
    IanA  103048 forum posts England12 Constructive Critique Points
    27 Mar 2004 - 9:03 PM

    Thanks Tim. Looks like it's going to have to have a trip back to the maker!
    Thanks for your help.
    (P.S. What have you got?)

    tim franklin
    27 Mar 2004 - 9:21 PM

    Hi Ian,
    I have a 28-80mm f/3.5-5.6 Minizoom Macro and a 70-210mm f/2.8 Apo. The latter is a very fine lens indeed. Interested? Wink

    Hope the repairs aren't too painful.

    IanA
    IanA  103048 forum posts England12 Constructive Critique Points
    28 Mar 2004 - 1:20 AM

    Yes Tim. e-mail in my portfolio.

    Ian

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