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Image parameters (contd.)

Tone (contrast) adjustment

Adjusting the tone alters the shape of the 'S curve' used to map the linear image data captured by the sensor into the correct gamma. A lower contrast setting maintains more of the original data's dynamic range but leads to a flatter looking image. A higher contrast setting stretches the grayscale (dark to light) of the image and could lead to clipping of both shadow detail and highlights. I found the D80's range of contrast adjustment a little too subtle and probably with too few steps.

  Thumbnail Luminosity histogram
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Color saturation adjustment

Saturation adjustment allows you to control the strength of color in the final image. Again while the D80 does provide some adjustment for this parameter the difference is very subtle, Nikon really should have provided more steps (at least -2 to +2) with a wider latitude of difference between the extremes.

  Thumbnail 50% crop
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Color hue adjustment

The hue adjustment setting allows you to make some subtle changes to the hue output of the image, it is useful for compensation of hue shifts caused by certain artificial light, a negative setting makes color appear more blue-ish, a positive setting makes color appear more yellowish. The D80 provides a range of -9° to +9° hue shift.

  Thumbnail 50% crop
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B&W mode

In addition to the standard black and white setting the D80 now provides customizable filters which can emulate the use of a color filter with black and white film. As you can see from the samples below each filter provides a different look for the image, emphasizing particular colors.

Standard Filter: Yellow
Filter: Orange Filter: Red
 
Filter: Green  
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