Measurebating

Discussion in 'Digital Photography' started by Cliff3, Feb 13, 2009.

  1. Cliff3 macrumors 65816

    Cliff3

    Joined:
    Nov 2, 2007
    Location:
    SF Bay Area
    #1
    This was actually an interesting exercise..

    [​IMG]

    I ran some resolution tests on my 80-200 earlier this week, and the results were disappointing enough that I sent the lens off to the Nikon repair facility to have them check it out. Significant chromatic aberration effects were clearly visible, and this is after the D700 is supposed to be correcting for lateral CA. The corners were very soft too. It was bad. The center of each image was ok, probably why I've been happy with the lens on my D100 and D2X all these years.

    I figured I should test the remainder of my lenses, just to see if there were any surprises there. Thankfully, there were not.

    Surprisingly, the one lens that was as sharp wide open as it was stopped down some was the 14-24. That thing is some kind of crazy sharp lens. My ancient 50 f1.8 AI wasn't bad either from about f2.8 on.

    I bought the 80-200 used and I've had it a while, so it wasn't entirely surprising to find problems there. I bought a 300 f4 AF-S and a TC14E used as well, but those both seem to be fine.

    My homemade resolution target won't be running rigorous lens benchmarks anytime soon, but it's good enough for a rough equipment check. FWIW, you can get the ISO charts here.
     
  2. pdxflint macrumors 68020

    pdxflint

    Joined:
    Aug 25, 2006
    Location:
    Oregon coast
    #2
    I've read that the 14-24 Nikkor almost matches Canon L primes on both ends wide-open... amazing! I really want that lens, even on a DX format which works out to 21-36 equivalent.
     
  3. TuffLuffJimmy macrumors G3

    TuffLuffJimmy

    Joined:
    Apr 6, 2007
    Location:
    Portland, OR
    #3
    Well I did not expect this sort of thread judging by the title.
     
  4. Cliff3 thread starter macrumors 65816

    Cliff3

    Joined:
    Nov 2, 2007
    Location:
    SF Bay Area
    #4
    I bought it last spring when I still had the D2X, and I must say the lens really comes into its own on an FX sensor camera. There is substantial distortion at 14mm (edit: keystoning, basically), but the lens seems perfect enough for architecture at 24. On a DX camera, you're buying it for the 14. On an FX camera, the whole range is wide :)

    Well, I felt a little guilty shooting test targets and doing all that pixel peeping today..
     
  5. S-Man macrumors regular

    S-Man

    Joined:
    Feb 1, 2009
    Location:
    Houston
    #5
    I've heard this sort of activity will grow hair on your palms...:eek:
     
  6. grizzlybrice macrumors regular

    grizzlybrice

    Joined:
    Mar 10, 2005
    Location:
    Playa Del Rey, CA
    #6
    I heard chimping does that too! :p

    -gB
     
  7. Cliff3 thread starter macrumors 65816

    Cliff3

    Joined:
    Nov 2, 2007
    Location:
    SF Bay Area
    #7
    Dunno about that, but there is definitely potential you'll go blind.
     

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