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Thread: Canon Teleconverter

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    Member Imagenif's Avatar
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    Canon Teleconverter

    Hi All,

    I'm trying to find out if an extender & a teleconverter are the same thing? I have an 18-200 lens on my 50d which I want to use for some car racing shots. I'm after something to give me something closer to a 400mm.

    Thx

    Tony
    Tony

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    Member Cris's Avatar
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    Hi
    Yes the extenders are the same as tele-convertors, but they are designed to be used on fixed focal length lenses. You will find that the image IQ will suffer and you will also lose autofocus and a stop of light, found this out from personal experience.
    Cheers

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    The Canon tele-extenders (aka tele-converters) are not compatible with the lens you have.

    They can only be used with:

    1. any L-series prime 135mm or longer;
    2. all four 70-200mm L zooms;
    3. the 100-400mm L zoom; and
    4. the 400/4 DO IS.

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    could try a 200mm f/2.8 with a 2x extender. Will be a 400mm f/5.6 with decent IQ. It wont be as good as other 400 lenses, but will be a more flexible and cheaper option. A 200mm f2.8 mark 1 is around $500-600 (used).

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    Imagenif's Avatar
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    Thanks for info all. Looks like I'm outta luck. I want to purchase my 24-105 before I buy a long tele. I'll see how I go with what I currently have

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