Adjusting the White Balance and Black Balance

To record high-quality video with the AG-HPX370P/AG- HPX371E, the black and white balances must be adjusted according to conditions.

For higher quality, it is recommended that the adjustments should be made in this order AWB (white balance adjustment) ABB (black balance adjustment) AWB (white balance adjustment).

NOTE

If white balance and black balance adjustments are made while the video image is distorted due to GENLOCK, the adjustments may not be correct. Wait for the video image to return to normal before performing white balance and black balance adjustments again.

Adjusting the White Balance

Whenever light conditions change, the white balance must be readjusted.

To adjust the white balance, follow the steps below.

2

Adjust the ND FILTER control according to the

 

light conditions.

 

For examples of ND FILTER adjustments, see

 

[Shooting and Recording/Playback Functions

 

Section] (page 21).

 

 

3

Place a white pattern at a point where the light

 

conditions match those for the light source of

 

the subject. Then zoom-in on the white pattern

 

so that white colour appears in the screen.

• A white object (cloth or wall) may be used instead of a white pattern. The illustration below shows the required size for the white space.

NOTE

•Do not point the camera at a high-brightness area.

•The white object must appear at the center of the screen.

1/3 or more of the screen in width

1/3 or more of the screen in height

Adjustments ChapterandSettings 4rding  rfoRec

a b c d e

aND FILTER control

This control adjusts the amount of light entering the MOS sensor.

bAUTO W/B BAL switch

Use for automatic control of white balance.

cGAIN selector switch

Normally set to 0 dB. If this is too dark, adjust gain as necessary.

dOUTPUT selector switch Set to CAM.

eWHITE BAL switch Set to A or B.

1 Set the GAIN, OUTPUT and WHITE BAL switches.

4 Adjust the lens iris.

• Use the Y GET function (for details, refer to page 61) and adjust the iris to a approximately 70 % of incoming light.

5 Turn the AUTO W/B BAL switch toward AWB and release it.

•The switch returns to the central position with the white balance automatically adjusted.

6

During an adjustment, the viewfinder displays

 

the following message:

AWB Ach ACTIVE

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