Nikon D300S - Page 165

BI 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
~~;:- (incandescent) is selected for white balance will make photographs
slightly "colder" but will not actually make them blue.
BI Color Temperature Fine-Tuning
When Choose color temp. is selected, you can
view the color temperature while fine-tuning
white balance.
~ IIMired"
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
6
,
is a measure of
color 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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