Question on zoom lens ranges.

Discussion in 'Beyond the Basics' started by jwbryson1, Jan 25, 2012.

  1. jwbryson1

    jwbryson1 TPF Noob!

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    Historically, how have lens manufacturers chosen the ranges (the minimum and maximum lengths) for their zoom lenses? Is there a specific reason for the lengths?

    For example, why choose to manufacture a 24-70mm lens? Why not make it 18-72mm, 20-100mm, 120-300mm or some other range?

    I suspect there is a reason for this but I don't know what it is. Just curious.

    Thanks.


     
  2. Derrel

    Derrel Mr. Rain Cloud

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    Yes, there has been a general reason for the lengths of zoom lenses. Here's an excellent article on the "why fors" (lol).


    Lens Genealogy « Canon Rumors

    Scroll down to the last few paragraphs for some simple, basic reasons on why "most" zooms have fallen into predictable, similar focal length ranges.
     
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  3. Destin

    Destin Been spending a lot of time on here!

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    Sigma makes a 120-300 ;)
     
  4. nmoody

    nmoody TPF Supporters Supporting Member

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    Absolutely fascinating! Thanks so much for sharing this.
     
  5. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

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    Interesting read, thanks Derrel.
     
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