D700 Iso equivalent to D80 400 Iso

Discussion in 'Nikon FX DSLR' started by adol290, Sep 9, 2008.

  1. adol290

    adol290

    30
    Apr 15, 2007
    Manitoba, Canada
    I have asked the same question on the D300 forum. I am trying to decide on the D300 or maybe the D700.

    So, Can someone tell me what ISO on the D700 would give the same image quality as the D80 at 400 Iso.

    I am particularly interested in the quality of the shadow details when the image is enlarged to 66%
     
  2. I'd say around ISO1600-2000 mark. About 2 stops.
     
  3. adol290

    adol290

    30
    Apr 15, 2007
    Manitoba, Canada
    So it looks like i could expect 1 stop from the D300, and
    2 stops with the D700.

    Thanks
     
  4. grepmat

    grepmat

    123
    May 5, 2008
    USA
    No, the D700 is not 2 stops better from ISO 400, much less 3. I'm staring at some pictures comparing this right now. This is with RAW, not jpg, using CS3 for the conversion. CS3 does very well with the D700, but not as well with the D300, by the way.

    ISO 400 on the 10MP CMOS sensors (e.g., D80) is worse than ISO 800 on the D700, but distinctly better than 1600. I'd rate it at 1.5 stops, max.

    I'd give the D300 about 2/3 stop, max, over the D80's sensor (at 400), and the D700 about 1.5 stops.

    The D700 has superb high-ISO performance, but there are still laws of physics at work.