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  1. #1

    Join Date
    Jul 2003
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    UK
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    12
    Im a total newbie and have been reading up and practicing alot recently.

    I have a question about short lenses and wide angles. It occurs to me that a short lense (say 20 or 28mm) would have a wide angle effect when compared to a longer lense that has a narrower field of view.

    If this is so, are lenses advertised as wide angle lenses costing more because they allow longer lenses to have a wider field of view? Or is it that I am getting a wide field of view (due to shortness of lense) mixed up with a wide angle lense ?

    Olly

  2. #2
    Ed Sukach's Avatar
    Join Date
    Nov 2002
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    Ipswich, Massachusetts, USA
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    The "Wide Angle" *is* the angle of the field of view. A shorter focal length lens will cover a wider field of "view". A lens of greater focal length will necessariy cover a smaller area, given the same film size - only a matter of simple geometry.

    The cost of a lens is far more closely connected to the design ... at the exteremes of focal length, the design problems become more difficult which translates to "more money".
    Carpe erratum!!

    Ed Sukach, FFP.

  3. #3

    Join Date
    Jul 2003
    Location
    UK
    Posts
    12
    So an advertised 20mm lense would be the same as a 20mm lense advertised as a "wide angle" lense ?

    I only ask because im looking at getting one and theres seem to be massive cost differences between lenses that dont seem too dissimilar.

    Olly

  4. #4

    Join Date
    Sep 2002
    Posts
    747
    Check things like speed. A faster lens is harder to make well then a slower lens. You'll also see difference in price between the lenses made by the camera makers and those made by third parties.

    But any lens shorter then a normal lens [say 43mm ] is wide.



 

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