Sony A99 vs Nikon D600 First high iso comparison

Started Sep 27, 2012 | Discussions thread
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TrojMacReady
TrojMacReady Veteran Member • Posts: 8,683
Re: Sony A99 vs Nikon D600 First high iso comparison

aardvark7 wrote:

How, exactly, would you measure the light intensity of a scene after the fact??

You simply can't measure the light intensity that existed at the time of the shot from an image. They may appear to be approximately the same, but that, unfortunately, means absolutely nothing.

Light intensity doesn't have to be relevant if the physical exposures make up for the ifference. But it's still completely meaningless unless:

  • we knew the temperature of the light source was the same

  • real amplification would be the same after metering (see differences in ISO ratings, DRO, etc.)

  • processing was the same (NR, sharpening, DRO and contrast curves affecting noise etc.)

Right now, it's a painful attempt at comedy.

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