Auto Lock Ring?

Discussion in 'Nikon Lenses' started by Daf, Jan 30, 2012.

  1. Daf

    Daf TPF Noob!

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    Hi,

    In the photo below - those buttons (there are 3, 2 not shown) I have the arrow pointing to - I've been able to determine that they are an Auto Lock system. How are they used? What sort of scenario would require their use.

    There is one on my 80-200mm and I have no idea how to use or why.

    Thanks!
    Daf



    [​IMG]


     
    Last edited: Jan 31, 2012
  2. Daf

    Daf TPF Noob!

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    No one? Okay, I'll keep digging and post what I find in case anyone else ever wants to know.
     
  3. ph0enix

    ph0enix TPF Supporters Supporting Member

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    It looks like joejack951 answered your post on dpreview :)
     
  4. Daf

    Daf TPF Noob!

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    He did! Cool - thanks! Seems to be a way to freeze the AF for recomposing or maybe even target focusing. Does feel a bit awkward to me as I try to use. Using it and zooming would be right out of question without some practice! ;)
     
  5. jriepe

    jriepe TPF Noob!

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    Some lenses can be locked to prevent lens creep. So possibly one of your buttons is for that. Just a guess. The Nikon 18-200 doesn't have it but desperately needs it and my Tamron 17-50 has it and doesn't need it.

    Jerry
     
  6. KmH

    KmH In memoriam Supporting Member

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