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70-200 F4L IS with and extender?

  • 29-01-2007 9:52am
    #1
    jpogorman
    Registered Users, Registered Users 2 Posts: 71 ✭✭


    Hi,

    I've had a quick look at the EF 70-200 f4L IS and was wondering what impact a tele extender would have on its range and quality.

    Would I be correct in saying that the EF 1.4x Tele Extender Mk II would result in a 98-280 range but I would lose one stop so the f4 would go f5.6? How would the 350Ds 1.6 crop effect this range? Would it go to 156-448?

    In general, it is worthwhile trying to squeeze and extra bit of range out of this lens or just buy a lens to go to 300mm?

    Ta,
    JP


Comments

  • #2
    Borderfox
    Registered Users, Registered Users 2 Posts: 10,265 ✭✭✭✭Borderfox


    In and ideal world we would get a 300mm but I have used the 1.4x TC with a Sigma 70-200 f2.8 and the results were excellent, I think people say it slows down the autofocus and you lose some image quality but for value for money its very good.

    Heres a sample at f4 and at max zoom with a 1.4x TC
    IMG_8038.jpg


  • #3
    jpogorman
    Registered Users, Registered Users 2 Posts: 71 ✭✭jpogorman


    Thanks for that. Great photo.


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