321 Set the GAIN and WHITE BAL switches.• For the WHITE BAL switch, select A or B asa position to save the adjustment value.2 Adjust the ND FILTER dial according to thelight conditions.For examples of ND FILTER dial, see “Lightintensity adjustments” (Page 31).3 Place a white pattern at a point where thelight conditions match those for the lightsource of the subject. Then zoom-in on thewhite pattern so that white color appears inthe screen.• A white object (cloth or wall) may be usedinstead of a white pattern. The illustrationbelow shows the required size for the whitespace.• Do not point the camera-recorder at a high-brightness area.• The white object must appear at the centerof the screen.1/3 or more of the screen in width1/3 or moreof the screenin height4 Adjust the lens iris.• Use the Y GET function (Page 122) and adjustthe iris to a approximately 70 % of incominglight.5 Press the AWB button.• The switch returns to the central position withthe white balance automatically adjusted.6 During an adjustment, the viewfinderor LCD monitor displays the followingmessage:AWB Ach ACTIVEAdjusting the white balance and black balanceTo record high-quality video with the AG-HPX255P/EN, the black and white balances must be adjustedaccording to conditions.If white balance and black balance adjustmentsare made while the video image is distorteddue to GENLOCK, the adjustments may notbe correct. Wait for the video image to returnto normal before performing white balance andblack balance adjustments again.Adjusting the white balanceWhenever light conditions change, the whitebalance must be readjusted.To adjust the white balance, follow the steps on theright.AWB buttonUse for automatic controlof white balance.WHITE BAL switchSet to A or B.ND FILTER dialThis control adjusts the amount of lightentering the MOS sensor.GAIN switchNormally set to 0 dB. If this is toodark, adjust gain as necessary.
