Tele Converter - Is this possible?

Discussion in 'Beyond the Basics' started by 250Gimp, Apr 29, 2008.

  1. 250Gimp

    250Gimp TPF Noob!

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    Hi All

    I am thinking of getting a Canon 1.4x mkII Tele Converter, and I was wondering about using it on non-L lenses by putting an extension tube between the lense and the extender.

    Will this work? In theory I think it will, but AF might be hit and miss, depending on the lense. I think I will also loose infinity focus, but in some situations I can live without that.

    Let me know what you think!

    Thanks
     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    As far as I can figure it...it should work...but yes, you would loose infinity, and probably auto focus (due to the lack of light).

    So what you would end up with would be a longer macro lens...if that works for you, then try it out.
     
  3. lostprophet

    lostprophet No longer a newbie, moving up!

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    just buy another 1.4x converter, either the Tamron one or the Kenko Teleplus Pro one, it will give just as good results but still focus at infinity
     
  4. 250Gimp

    250Gimp TPF Noob!

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    Thanks Big Mike. That is what I expected.

    Lost Prophet - If only money grew on trees!! Some day though.

    Cheers
     
  5. lostprophet

    lostprophet No longer a newbie, moving up!

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    You do realise that the Tamron and Teleplus converters are about half the price of the Canon ones don't you? Well they are here in the UK

    Having used both Canon tube's and a Canon extender on a Canon 70-200 2.8 IS I can tell you you'd be better off with just a 1.4. The focussing range will become limited. Its good for close up work but not a lot of good for anything else
     
  6. 250Gimp

    250Gimp TPF Noob!

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    Thanks LP

    I have the Canon 1.4x TC already, but was thinking about trying it on another lense. I'll just have to do some experimenting and see what happens.

    Cheers
     
  7. usayit

    usayit No longer a newbie, moving up!

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    My tamron teleconverter works great with the tamron lens I purchased with it BUT does ~not~ work with any of my Canon lenses. Albeit my Tamron converter is old but I wouldn't assume the Tamron and Canon converters are equivalents.
     

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