Quick Question

Discussion in 'Lens Lust' started by mrtac2man, Dec 24, 2005.

  1. mrtac2man


    Jun 3, 2005
    the nikon 300 f4 and the tc14e.. what lenght will that give me mounted on a d70


  2. Should be: (lens focal length X Converter) X crop factor

    Comes down to:
    (300 X 1.4) X 1.5 = 630mm equivalent to 35mm.

    note: brackets to illustrate the principle only - mathematically not required, of course.
  3. nfoto

    nfoto Guest

    300 x 1.4 = 420 mm.

    "Crop factor" has no bearing on the focal length.
  4. Thank you - this is such a tiring misconception.

  5. I must have misunderstood the question. Focal length obviously is 420mm, I agree.
  6. jfrancis


    May 8, 2005
    Orlando, FL
    Yes, but I suspect the questioner wanted to know what effective FOV he would get on his D70.
  7. mrtac2man


    Jun 3, 2005
    the reason

    trying to decide between this combo or the something in the reach of 500 mm like the bigma or the 80 400 vr nikon or the sigma os...

    Thanks Tim
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