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Compared to...

Below you will find a studio comparison between the Kodak DX7590 and the similarly specified Panasonic DMC-FZ20 at ISO 400.

Studio scene comparison (@ ISO 400)

  • Kodak DX7590 : Aperture Priority mode, ISO 400, Default Image Parameters,
    Manual white balance (daylight), -0.3 EV compensation
     
  • Panasonic DMC-FZ20: Aperture Priority mode, ISO 400, Default Image Parameters,
    Manual white balance
     
  • Lighting: Two 800W studio lamps with dichroic daylight filters bounced off the ceiling
Kodak DX7590
Panasonic DMC-FZ20
ISO 400, 1/10 sec, F5.7
ISO 400, 1/15 sec, F5.2
1,796 KB JPEG
2,415 KB JPEG
Noise, std dev: 3.6
Noise, std dev: 5.1

At ISO 400 the result of the DX7590's aggressive noise reduction system can be clearly seen as smoother images. Unfortunately the amount of smoothing is so great that further fine detail has been lost, giving the images - when magnified like this - a smudged, almost watercolor-like effect. I'd rather have a little noise (which can easily be removed in post-processing if you wish) than to sacrifice fine detail in this manner, but that's a matter of personal taste. ISO 400 is usable if you're printing fairly small - say 5x7 inches - but at higher enlargements you'll see the lack of detail.

Note that at ISO 400 we actually needed to reduce the DX7590's metered exposure by 0.3EV to get the same result as using +2.0EV at ISO80. This metering anomaly was repeatable and only occurred in the studio.

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