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  1. #1

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    Out of curiosity... Lens equivalent.

    I have a 350mm lens on a 4x5 Speed Graphic.. and was out shooting today, and also had a 35mm Canon AE-1, with a 400mm lens on it, and comparing them.
    Out of curiosity, searching the net, I came up that it would be about 120mm, in 35mm.
    No big deal, but wondered, give or take, if this is this about right?

  2. #2
    wiltw's Avatar
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    I follow the Sinar suggestion to use the vertical frame dimension for 'equivalent FL' calculations, as that neutralizes completely diagonal differences inherent to different aspect ratio frame sizes.

    350mm / 95mm = 3.72x
    So 24mm * 3.72x = 88mm

  3. #3
    jcc
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    Toyo gives equivalent focal lengths in their website. http://www.toyoview.com/LensSelection/lensselect.html



 

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