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Thread: EF 100-400mm F4.5/5.6L IS USM

  1. #1
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    EF 100-400mm F4.5/5.6L IS USM

    Hi all,
    Could you advice if the above mentioned lens with work finely with the Extender- EF 2XII?
    I have got the lens but still thinking if it is adviceable to get the extender.

    Thanks,
    Leong

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    Re: EF 100-400mm F4.5/5.6L IS USM

    Quote Originally Posted by Leong View Post
    Hi all,
    Could you advice if the above mentioned lens with work finely with the Extender- EF 2XII?
    I have got the lens but still thinking if it is adviceable to get the extender.

    Thanks,
    Leong
    Hi Leong,

    Optically it will work, but will be manual focus only. If you used a 1.4x TC it would STILL be manual focus only unless you used it on a 1 Series camera (eg 1D3, 1Ds3 etc).

    Best bet if you need 800mm of reach is to re-mortgage the house and get an EF800/5.6L.

    Hope this helps

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    Re: EF 100-400mm F4.5/5.6L IS USM

    Hi Collin,
    Thanks for the fast and prompt reply.
    well.... this lens is a bit too heavy for manual focus....

    Regards,,,

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    Re: EF 100-400mm F4.5/5.6L IS USM

    No worries. Assuming that youd have been using it on a crop-factor camera then that would have been over 1200mm of reach - what do you need so much for if you don't mind me asking?

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    Re: EF 100-400mm F4.5/5.6L IS USM

    Well... Collin,

    Zooming is thrilling thats all...

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    Re: EF 100-400mm F4.5/5.6L IS USM

    Quote Originally Posted by Leong View Post
    Well... Collin,

    Zooming is thrilling thats all...
    I know

    EF 100-400mm F4.5/5.6L IS USM

    EF 100-400mm F4.5/5.6L IS USM

  7. #7

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    Re: EF 100-400mm F4.5/5.6L IS USM

    Quote Originally Posted by Colin Southern View Post
    If you used a 1.4x TC it would STILL be manual focus only unless you used it on a 1 Series camera (eg 1D3, 1Ds3 etc).
    Hope this helps
    Is it really 1-series cameras or a FF camera (I'm asking because I have the 5dMkII). If only 1-series, do you happen to know why?

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    Re: EF 100-400mm F4.5/5.6L IS USM

    Quote Originally Posted by KentDub View Post
    Is it really 1-series cameras
    Yes.

    If only 1-series, do you happen to know why?
    Yes - in summary, they have a higher performance AF system, which is what we pay the big bucks for.

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