Bjorn (or others) 180 f2.8 ED AIS Question

Discussion in 'Lens Lust' started by jfenton, Aug 29, 2005.

  1. jfenton

    jfenton

    Jan 26, 2005
    Haverhill, MA
    Hi Bjorn...

    I had one offered to me really cheaply this afternoon in mint condition with the disclaimer that it "focuses past infinity", so you need to manually focus (duh) rather than just putting it to infinity and pointing and firing away.

    Is this an issue????

    Thanks,
     
  2. I had a 180 f2.8 lens and it too focused slightly past infinity. I loved that lens and it never bothered me. I normally focus manually anyway. I did have a chip put in the lens to convert it to AFS but then sold it when I bought my 70-200mm f2.8 lens.
     
    Last edited by a moderator: Aug 29, 2005
  3. Chris101

    Chris101

    Feb 2, 2005
    Arizona
    Hi Jim, I'm not Bjorn, but I believe the lens is designed that way to accomodate a focus shift in the lens with varying temperature. This way, you are assured to be able to get to infinity, no matter what the temperature.
     
  4. Iliah

    Iliah

    Jan 29, 2005
    nowhere
    Chris is correct IMHO. Mine rotates about 4 mm past infinity mark, same as many other (telephoto) lenses from different manufactures.
     
  5. jfenton

    jfenton

    Jan 26, 2005
    Haverhill, MA
    Is Everyone Happy

    Is everyone happy With the optical qualities / performance of the AIS..I intend to use it on a D2X.?
     
  6. W Thorne

    W Thorne

    17
    Jul 24, 2005
    Houston
    I had one of the later 180 f2.8 AIS lens and the optics were great. What I didn't like was the long focus turn and the stiff feel. Not smooth like a 300 f2.8.

    I bought a 180 f2.8 AFD lens and the IF of that one fixed all the focus problems for me. On manual focus it was very smooth and fast.
     
  7. I have the 135mm AIS lens (which is very similar to the 180 in image quality) and love it!!!! Here is a pic of the lens on my now 'gone' D2H. 'Bodies' come and go but good glass goes on forever!

    I suspect the 180 AIS will perform great on your D2X.

    [​IMG]

    JohnG
     
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