understanding how the Lens works and what 28-135 means! ..Anyone know any good tute sites?

Discussion in 'Digital Photography' started by niicko, Sep 9, 2003.

  1. niicko

    niicko Guest

    Hey guys,

    Does anyone know a good resource page where I can learn about Lenses?


    I'm wanting to buy some Lenses soon but instead of hassling you guys with
    every question (like what the 28 and the 135 means and the f/3.5-5.6 means
    when talking about the 'EF 28-135mm f/3.5-5.6 IS USM'), does anyone know of
    a good URL tutorial page(s) where I can learn about this. Cheers!

    niicko, Sep 9, 2003
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  2. niicko

    niicko Guest

    USM stands for 'UltraSonic Motor' - I believe this is a marketed phrase for
    their noise reduction engine. Thank you for the run down on lenses, much

    niicko, Sep 11, 2003
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