Nikon 1541 User Manual page 182

❚❚ The U Button
At settings other than K (Choose color temp.) and L (Preset
manual), the U button can be used to fine-tune white balance
on the amber (A)–blue (B) axis (0 159; to fine-tune white balance
when L is selected, use the shooting menu as described on
page 158). Press the U button and rotate the sub-command dial
to fine-tune white balance in steps of 0.5 (with each full increment
equivalent to about 5 mired) until the desired value is displayed in
the rear control panel. Rotating the sub-command dial to the left
increases the amount of amber (A). Rotating the sub-command
dial to the right increases the amount of blue (B). At settings other
than 0, an asterisk ("U") appears in the rear control panel.
U button
A
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
r
J (Incandescent) is selected for white balance will make photographs
slightly "colder" but will not actually make them blue.
A
"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
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
160
Sub-command dial
Rear control panel
6
, is a measure of