SONY HDW-F900
Instrukcja Serwisowa

5-7. Registering the OHB File

5-7-2. Adjusting the ND Offset
The white balance may be slightly deviated in the ND filters. In such cases, adjust the offset. Taking the ND filter 1 white balance as the reference, the ND offset stores the deviation of the white balance of ND filter 2, 3, 4. Adjusting the ND Offset (1) Set the setup menu as follows. [FILE] � [REFERENCE] � [STANDARD] (2) Connect the waveform monitor to MONITOR OUT connector of this unit. (3) Select ND filter 4, and shoot the grayscale chart. Check that the illuminant condition is under that video level is within 560 mV thru. 630 mV. Then note the video level at this time. n Do not adjust the ND offset if the video level is less than 560 mV. (4) Select 1 by the ND filter knob, and set the iris so that the video level is the same level as the noted video level of Step (2). (5) Execute the auto white balance. (6) Select 2 by the ND filter knob, and set the iris to meet the noted video level of Step (2). (7) Execute the auto white balance. (8) Select 3 by the ND filter knob, and set the iris to meet the noted video level of Step (2). (9) Execute the auto white balance. (10) Select 4 by the ND filter knob, and set the iris to meet the noted video level of Step (2). (11) Execute the auto white balance. (12) Store the ND offset. Execute the setup menu as follows. [FILE] � [OHB] � [STORE|FILE] m . Adjust precisely to meet the noted video level, otherwise the deviation of the white balance of the ND filter may generate in some cases. . If the level cannot be adjusted properly using the iris, adjust the level using the shutter/ECS or gain-up. Calling the ND Offset When the ND filter is changed, the ND offset will be called automatically. Initializing the ND Offset Execute the setup menu as follows. [FILE] � [FILE|CLEAR] � [OHB|ND|OFFSET]

HDW-F900 P1

5-11