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    extension tubes

    Looking to purchase canon500mm F4 IS lens and I note that Canon show 2 extension tubes, question, what effect would using them have compared to extenders ?

    #2
    Re: extension tubes

    An extender extends the zoom range of your lens, ie a 1.4x extender will give you 700mm on your 500 f4. Extension tubes just reduce the minimum focussing distance of your lens enabling you physically to get closer to your subject

    Stan
    Stan - LRPS, CPAGB, BPE2*

    http://neptuno-photography.foliopic.com/
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      #3
      Re: extension tubes

      Many thanks good news for the LBJs

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