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Nikkor AF-S 24-85 f/3.5-4.5 on FX vs AF-S 17-55 f/2.8 on DX

Discussion in 'Lens Lust' started by GSloan, Jul 5, 2008.

  1. GSloan

    GSloan

    9
    Jul 5, 2008
    Houston, TX
    And now for my first post here...

    Does anyone have any experience with the Nikon 24-85mm AF-S on a D3 vs a 17-55mm f/2.8 D300? Other than the persistent f-stop range, I'm curious to see if full-frame offers comparable quality with this cheaper lens vs a DX frame with a higher quality one.

    Does anyone have any experience with both on their respective formats? Not looking for a 24-85 vs 17-55 on DX only. One lens on FX, the other on DX. All things being equal, f/2.8 itself isn't all that important to me.

    Photozone.de gave them both the same rating on optical quality, but this was solely on DX:

    http://www.photozone.de/Reviews/46-...5mm-f35-45g-if-ed-review--test-report?start=1 - 24-85 f/3.5-4.5

    http://www.photozone.de/Reviews/46-...-s-17-55mm-f28-g-if-ed-dx-review--test-report - 17-55 f/2.8

    Thanks! :D 
     
    Last edited by a moderator: Jul 6, 2008
  2. I have the 24-85mm but only use it on a D80. I can't say how it performs on a FX, but on my DX it rocks! :D 
     
  3. GSloan

    GSloan

    9
    Jul 5, 2008
    Houston, TX
    Yeah, I've seen DX reviews...but I'm really curious to see how a cheaper lens on FX does against a more expensive lens on DX.
     
  4. cotdt

    cotdt

    Jul 14, 2007
    Bay Area, USA
    FX is less demanding of lens sharpness due to lower pixel density, so the 24-85 will probably do better. the 24-85 is actually the faster lens if you calculate how much light it puts onto the FX sensor.
     
  5. GSloan

    GSloan

    9
    Jul 5, 2008
    Houston, TX
    That's what I was figuring, but I was curious if anyone had any real-world experience. Looking at specs and what something should do often differs from what the end result looks like.

    Thanks!
    Geoff
     
  6. cotdt

    cotdt

    Jul 14, 2007
    Bay Area, USA
    in the real world none of this matters because sample variation would make a bigger difference. half of the brand new lenses i buy have some decentering or some focus issue.
     
  7. GSloan

    GSloan

    9
    Jul 5, 2008
    Houston, TX
    Gotcha. So suffice it to say, you think that they'd be about on-par, with a slight nod to the 24-85?

    Thanks again.
     
  8. Gnarl

    Gnarl

    35
    Jun 25, 2008
    Fairfax, VA
    I think you have to look at the MTF across the entire imaging circle covered by the sensor. Lenses lacking edge sharpness usually perform worse on full-frame sensors rather than crop sensors.
     
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