Out of curiosity... Lens equivalent.

Discussion in 'Large Format Cameras and Accessories' started by peter k., Apr 23, 2014.

  1. peter k.

    peter k. Subscriber

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    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. wiltw

    wiltw Subscriber

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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. jcc

    jcc Member

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