A&P how do you convert those zoom lengths to real distance?

Discussion in 'Lifestyle' started by babygodzilla, May 1, 2008.

  1. babygodzilla

    babygodzilla I love rice

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    so if my camera says 28-280mm, what exactly does that translate to?


    thanks
     
  2. ballz

    ballz Two of 'em OT Supporter

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    .028 - .280 meters.

    this is a really dumb question. expect more dumb answers.
     
  3. xenon supra

    xenon supra OT Supporter

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    it doesn't work like that. both of these pictures were taken at 200mm, which do you think was closer?

    [​IMG]

    [​IMG]
     
  4. Jcolman

    Jcolman OT Supporter

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    It's simply the focal length of the lens.
     
  5. babygodzilla

    babygodzilla I love rice

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    well so it's a measure of how far it'll push in in relation to where the camera is right?

    well how bout you educate me instead of acting like an asshat?
     
  6. CornUponCob

    CornUponCob New Member

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    It refers to the focal length. Not all lenses change in length as you zoom in and out. Doesn't have much to do with the physical length of the lens. Some 300mm lenses are longer than others. The 35L I believe is physically longer than the 50L.
     
  7. jared_IRL

    jared_IRL OT Supporter

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    Those numbers don't specifically translate to anything in regards to distance.

    The focal length is simply the strength of magnification of the lens, and the measurement is the distance from the middle of the lens to the focal point.
     
  8. Dwight Schrute

    Dwight Schrute New Member

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  9. tetsuo

    tetsuo And shepherds we shall be...

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    i'm guessing your referring to a point and shoot with its 3x or 4x or 12x etc zoom. they don't directly correlate, but you can use google to find the approx range of the point and shoot you are used to using. then compare that to the range of the lenses you are looking at. remember to figure in a crop if you are using a crop dslr.
     
  10. babygodzilla

    babygodzilla I love rice

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    thank you for all your very useful replies, unlike someone else's in particular which was completely useless. that article @ dpreview was enormously helpful. i understand now. thanks!
     
  11. tenplanescrashing

    tenplanescrashing Active Member

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    welcome to OTAP
     

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