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Thread: 35mm Equivalent of 120mm Nikkor SW?

  1. #1
    http://www.spiritsofsilver.com tgtaylor's Avatar
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    35mm Equivalent of 120mm Nikkor SW?

    The comparison chart on the Home Page says it's 17mm. Applying the dimensional analysis that I learned in college:

    50mm (35)/300mm (8x10) * 120mm (8x10) = 20mm 35mm Equiv.

    Also the chart says that the Nikkor will not support a front rise. However this image taken last week was shot using front rise and a back tilt:



    The above is a scan done with an Epson 3200 which will not cover the negative. But note that there is no fallout on the edges.

    Thomas

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    Re: 35mm Equivalent of 120mm Nikkor SW?

    But normal for 35 mm is 43 mm, not the 50 mm you plugged into y'r formula.

  3. #3
    http://www.spiritsofsilver.com tgtaylor's Avatar
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    Re: 35mm Equivalent of 120mm Nikkor SW?

    Yep, using 43mm instead of 50mm would explain it.

    I never had a 17mm 35mm lens and always thought that it was a fish-eye lens. Pentax has a 35mm lens (17mm 35 equiv) for the 6x7 which is a fish eye. But as you can see from the scan, there is no fish eye distortion on the 8x10 that you would expect using that focal length.

    Thomas

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    Re: 35mm Equivalent of 120mm Nikkor SW?

    The Nikon has a huge image circle for a 120mm. The comment was likely meant for those who use it on 8x10 where the image barely fits. Barely means to get infinity in, its best to focus in a little and cover with stops. Focus closer (move lens away from focal plane) and you get more usable (larger)image circle to make movements.

    bob

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    Mike Anderson's Avatar
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    Re: 35mm Equivalent of 120mm Nikkor SW?

    Quote Originally Posted by tgtaylor View Post
    Yep, using 43mm instead of 50mm would explain it.

    I never had a 17mm 35mm lens and always thought that it was a fish-eye lens. Pentax has a 35mm lens (17mm 35 equiv) for the 6x7 which is a fish eye. But as you can see from the scan, there is no fish eye distortion on the 8x10 that you would expect using that focal length.

    Thomas
    Nikon made a 13mm (for 35mm) that's not a fisheye:

    http://www.mir.com.my/rb/photography...wides/13mm.htm
    http://www.kenrockwell.com/nikon/ima..._1156-1200.jpg

    ...Mike

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    Re: 35mm Equivalent of 120mm Nikkor SW?

    I routinely use a rectilinear 12mm on 35mm:

    http://www.epr-art.com/galleries/c3/

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