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Thread: what is the meaning of lens rating: 50m, 200mm, etc ?

  1. #1
    Senior Member erictan8888's Avatar
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    Nov 2004
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    Default what is the meaning of lens rating: 50m, 200mm, etc ?

    hi,

    a newbie question here:

    what exactly is the meaning of the lens rating when they say it is a 50mm lens? or a 200mm lens ?

    so how do we gauge what type of lens to shoot what type of distance?

    thanks
    Hope to learn from everyone here....

  2. #2

    Default

    http://cweb.canon.jp/camera/ef/index.html


    click on the interactive mode (orange colour words) and it will load the active lens work thingy 4u 2 play around with. it allows u to explore the diff effects of focal lenght, perspectve and DOF control ...

  3. #3

    Thumbs up

    Quote Originally Posted by user111
    http://cweb.canon.jp/camera/ef/index.html


    click on the interactive mode (orange colour words) and it will load the active lens work thingy 4u 2 play around with. it allows u to explore the diff effects of focal lenght, perspectve and DOF control ...

    yup good guide though its in jap.....when the page loads click on interactive movie icon on the left of the page.

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