Wobei Ken Rockwell über das Histogramm der D70 wie folgt urteilt:
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Beware of the histogram display. It stinks. You see this during playback by tapping the four-way directional selector to the left or right a few times. The histogram display is defective in design and therefore less than useless because its inaccuracy can lead you to make heinously overexposed images that still read AOK. The problem simply is that the histogram display of the D70 (just like the D1H and D1X) only displays the green channel. (some say the luma channel, which is very similar, typically 60% G, 29% R and 11% B.) This is just fine if you are shooting something either gray or green, but almost guarantees overexposure if your subject has a lot of red or blue in it. Why? Simple: a strongly red subject, be it a sunset or a white gown in warm afternoon sunlight, will have more red than green or blue in it. If you make the mistake of using the D70's histogram to set your exposure you'll have set the green channel to optimum exposure. Since your image has more red than green you'll have more than 100% red, which means you'll be clipping the red channel and get the according nasty hue shifts as well in your blown out highlights.
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Quelle:
http://www.kenrockwell.com/nikon/d70perf.htm#lcd