What is difference between AFS I and II?

Discussion in 'Lens Lust' started by Guest-002, Jun 20, 2007.

  1. Guest-002

    Guest-002 Guest

    263
    Jan 14, 2006
    Worcester, MA
    Particularly on longer lenses like the 500.
    I've googled this and haven't found anything useful.
     
  2. CAJames

    CAJames

    Sep 6, 2006
    Lompoc, CA
    I don't think there is much difference if any in the auto-focus itself or the optics, but the AF-S II lenses were redesigned with e.g. carbon fiber to be lighter.
     
  3. Greg V

    Greg V

    32
    Feb 19, 2007
    SE Michigan
    i believe the barrel on the AF-S II is made of a magnesium alloy as opposed to aluminum in the AF-S I. That took some weight out of the lens. Additionally, I believe the AF-S II have a shorter minimum focus compared to the AF-S I. I think those are the only significant differences.
     
  4. I
    (sorry couldnt help it) Greg is correct
     
  5. I don't own any of these, but isn't it the case that it's only the marked minimum focus distance that's different? Ie both an AFS-I and AFS-II will focus on the same object at the same minimum distance, but the AFS-I is marked with a longer minimum distance on the barrel.
     
  6. Greg V

    Greg V

    32
    Feb 19, 2007
    SE Michigan
  7. OK, I guess that was one of the other lenses that got upgraded, then.
     
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