Hitachi V-21W - Manual (Page 47)

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White and black balance adjustment
4. Adjust the lens iris.
5. Set the White BAL switch to A or B, then set the Auto W/B BAL switch to AWB. The switch returns to center
and white balance is adjusted automatically.
6. During adjustment, the following messages appear on the viewfinder screen.
7. Adjustment is completed in about 1 second, after which the adjustment value is automatically stored in the
selected Scene File memory (A or B).
Adjustment in progress Adjustment complete
Note
"Hunting" can occur if an auto iris type zoom lens is used. Adjust the lens iris gain (see lens operating
instructions).
(Note 1) Hunting: Undesirable oscillation of an automatic control system, wherein the controlled variable swings on
both sides of its desired value. [Dictionary of Scientific and Technical Terms, McGraw-Hill]
Filter position and
illumination color
temperature.