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Thread: Magnification VS Distance

  1. #1

    Default Magnification VS Distance

    When it comes to macro, what is the relation between distance and magnification? And how do they work? For a example a camera can have a macro of 1cm but the magnification is not great, why is that so?

  2. #2
    Moderator ortega's Avatar
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    Default Re: Magnification VS Distance

    working distance is good for subject that will fly/run away when you approach it for a shot.
    Magnification is how big you can get the subject.

    Eg. the 12-24 can focus as close to 3cm (If I remember correctly) but due to the wide angle of view the subject will still appear small.

  3. #3

    Default Re: Magnification VS Distance

    a magnification factor of 1 (life size image) is obtained when

    subject distance = 2 X lens focal length
    (where subject distance is measured from the optical centre of the lens)




  4. #4

    Default Re: Magnification VS Distance

    for the more mathematically inclined

    lens focal length
    subject distance- lens focal length = magnification factor

    (again subject distance measured from the optical centre of lens)



    someone please correct me if i am wrong.
    Last edited by vkashi; 2nd November 2005 at 07:02 PM.

  5. #5

    Default Re: Magnification VS Distance

    Here's the sites which explains a lot about the working distance/magnification

    http://www.dslreports.com/shownews/68725
    http://azone.clubsnap.org/insectguide/page01.html

  6. #6

    Default Re: Magnification VS Distance

    Good site to learn more about the macro photography. Still I am learning

    http://www.cameraontheroad.com/?p=215

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