Nikon D300 User Manual page 157

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White Balance Fine Tuning
The colors on the fine-tuning axes are relative, not absolute. For example,
moving the cursor to B (blue) when a "warm" setting such as J
(incandescent) is selected for white balance will make photographs
slightly "colder" but will not actually make them blue.
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"Mired"
Any given change in color temperature produces a greater difference in
color at low color temperatures than it would at higher color
temperatures. For example, a change of 1000 K produces a much greater
change in color at 3000 K than at 6000 K. Mired, calculated by multiplying
the inverse of the color temperature by 10
temperature that takes such variation into account, and as such is the unit
used in color-temperature compensation filters. E.g.:
• 4000 K–3000 K (a difference of 1000 K)=83 mired
• 7000 K–6000 K (a difference of 1000 K)=24 mired
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, is a measure of color
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