Nikon D300 User Manual page 682

Manually Selecting a Color
Temperature between 2,500 and
10,000 K
(User's Manual – D300S page 142; D300 page 136)
The K, or Choose color temp. selection is a flexible one that
allows you to manually select a WB value between 2,500 and
10,000 K. Once you have selected the K symbol by holding
down the WB button and rotating the Main command dial,
rotate the Sub-command dial to select the actual WB
temperature you desire.
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