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

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

    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

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