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  1. #11

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    Feb 2009
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    Quote Originally Posted by CanonShot View Post
    What are the pros and cons with respect to handling
    a one-touch zoom versus a two-touch zoom? Is one
    easier to use, easier to focus, or optically better?

    TIA,
    Don
    I have several of each (some AF, some MF)
    The earlier zooms were mostly MF one-touch zooms.

    With MF, the one-touch is faster and "easier" to use.

    With AF, there is little difference in ease/speed of use.

    In the case of both, as the action 'loosens up" due to wear, particularly in the case of lenses with large, heavy, glass elements, there is a tendency for zoom creep if the lens is not level, and one needs to stop this creep by the careful application of a restraining finger (or whatever).

  2. #12

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    Nov 2007
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    IF you want precise focus a two-touch is always better.

    Depending on the size of your hands, size of lens and lens used; with practice one can use one part of the had for zooming (to a degree) and the other part for focusing.

    With practice you will get used to going between actions without thinking.

  3. #13
    Poohblah's Avatar
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    Aug 2008
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    I've found that I prefer 1-touch over 2-touch for several reasons including the wonderful DOF scale on many 1-touch zooms. That said, I also don't prefer zoom lenses.

    Just personal preference, I suppose.

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