Why does software want focal length?

Discussion in 'Digital Photography' started by Click, Sep 30, 2003.

  1. Click

    Click Guest

    I have just ordered my first digital camera. I have noticed that some
    software,like Photo Impact 8 etc., allows you to enter the focal length for
    the camera. What is this going to do? If it does anything can I assume
    that the value might be meaningless if the camera has a zoom lens?

    --
    Thanks in advance

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    Click, Sep 30, 2003
    #1
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  2. "Click" <> writes:

    > I have just ordered my first digital camera. I have noticed that some
    > software,like Photo Impact 8 etc., allows you to enter the focal length for
    > the camera. What is this going to do?


    I don't use Photo Impact, so I can't speak for it, but software I use wants
    to know the effective 35mm focal length so the software can determine the
    field of view for stitching the photos together.

    > If it does anything can I assume
    > that the value might be meaningless if the camera has a zoom lens?


    Well, you are expected to know the focal length you _used_, not the range
    of the zoom. :)
    --
    Philip Stripling | email to the replyto address is presumed
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    Phil Stripling, Sep 30, 2003
    #2
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