Adjusting the White Balance

Adjust the white balance according to the color temperature of the lighting. You can select the adjustment mode according to the shooting conditions.

As the color of the light (color temperature) varies according to the light source, it is necessary to readjust the white balance when the main light source illuminating the subject changes.

HC900_WhiteBalance

Automatic White Balance Mode (FAW: Fulltime Auto White balance)

Set Full Auto mode to off using the user button assigned with “Full Auto”.
Assign “FAW” (Full Auto White Balance) to one of the three [WHT.BAL] switches.

You can set the Full Auto White Balance feature to either “A”, “B”, or “PRST” in [Camera Function] arrowR [FAW].

If the position assigned with “FAW” is selected using the [WHT BAL B/A/PRST] switch, the Automatic White Balance mode is enabled and an appropriate white balance is automatically adjusted according to the color temperature of the lighting on the subject.

Caution

The accuracy of [FAW] is inferior to that of [AWB] (Auto White Balance).

When the power of the camera recorder is turned on with the [FAW] mode selected, it takes about 15 seconds for the colors to stabilize.

Memo

Use the user button assigned with “Full Auto” to enter the Full Auto mode also activates the Automatic White Balance mode. In this case, the Iris, Gain and Shutter also enter into Auto mode forcibly.

The white balance operation during Full Auto mode can be configured in [Camera Function] arrowR [Full Auto] arrowR [White Balance].

When [Camera Function] arrowR [User Switch Set] arrowR [AE Lock] is set to “AE/FAW” or “FAW”, the white balance when the user button that is assigned with [AE Lock] is pressed can be fixed while in the Automatic White Balance mode.

If [White Balance] is assigned to the user button, pressing the assigned user button will display the FAW Paint Adjustment screen.

FAW Paint Adjustment

You can fine-adjust the white balance that was automatically adjusted.

Select [Camera Process] arrowR [White Balance] arrowR [FAW Paint] and press the Set button ( REC button ).

The FAW Paint Adjustment screen appears.

FAWPaint_01_890
Adjust the R and B values.

Use the cross-shaped button ( U_botton D_botton ) to adjust R value and ( L_botton R_botton ) to adjust B value.

WhitePaint_890
Press the Set button ( REC button ).

Returns to the [White Balance] screen.

FAWPaint_02_890

Manual White Balance Mode (Manual Switching)

Set Full Auto mode to off using the user button assigned with “Full Auto”.

Use the [WHT.BAL] switch to select “PRST” (preset mode), “A” (memory A mode), or “B” (memory B mode).

Memo

You can set the Full Auto White Balance feature to either [A], [B], or [PRST] in [Camera Function] arrowR [FAW].

The FAW (Full Time Auto White Balance) mode makes automatic adjustments by sampling the color temperature of the video to obtain the most appropriate white balance level.

Preset Mode (PRST)

Two different color temperature settings are registered on this camera recorder. You can switch between them by pushing the [AWB/USER8] switch upward or using the user button assigned with “AWB”.

Default setting:

[Preset Temp.]:

3200K

[Alternative Temp.]:

5600K

Set the [WHT.BAL] switch to “PRST”.
Push the [AWB/USER8] switch upward or press the user button assigned with the “AWB” function.

The color temperature switches.
(“Preset Temp.” arrowLR “Alternative Temp.”)

Setting the [Preset Temp.] or [Alternative Temp.] Values

You can change both the color temperature settings in the Preset mode in the menu.

Open the [Preset Temp.] or [Alternative Temp.] menu.

Select [Camera Process] arrowR [White Balance] arrowR [Preset Temp.] and [Alternative Temp.], and press the Set button ( REC button ).

The Color Temperature setting screen appears.

WhiteBalance
Select the color temperature.

When selecting from a setting value (Color Temperature Selection screen), use the cross-shaped button ( U_botton D_botton ) to select the color temperature.
[Setting Values: 7500K, 6500K, 5600K, 5200K, 4800K, 4200K, 3200K, 3000K, 2800K]

To select detailed values (Color Temperature Detailed Selection screen)

Press the cross-shaped button ( R_botton ) to display the Color Temperature Detailed Selection screen.

Use the cross-shaped button ( U_botton D_botton ) to select a color temperature.
[Setting Values: 2300K to 15000K (in 100K increments)]

Memo

Use the cross-shaped button ( R_botton ) to switch between the Color Temperature Selection screen and the Color Temperature Detailed Selection screen.

If [White Balance] is assigned to the user button, pressing the assigned user button will display the Color Temperature Selection screen.

Preset Paint Adjustment

The white balance for [Preset Temp.] and [Alternative Temp.] can be fine adjusted individually or collectively.

Select [Camera Process] arrowR [White Balance] arrowR [Preset Paint Memory].

“Common” configures the settings for the entire color temperature range collectively.

“Individual” configures the settings for the 9 types of color temperature individually.

Select [Camera Process] arrowR [White Balance] arrowR [Preset Paint].

The adjustment screen appears if “Common” is selected.

The lower color temperature limit of the color temperature range is displayed if “Individual” is selected. Select the color temperature to adjust.
In the case of 2300K for example, the target range is 2300K to 2900K (less than 3000K)

Adjust the R and B values.

Use the cross-shaped button ( U_botton D_botton ) to adjust R value and ( L_botton R_botton ) to adjust B value.

Press the Set button ( REC button ).

In the case of “Common”, the display returns to the [White Balance] screen.

As for “Individual”, repeat steps 1 to 4 as necessary to configure each color temperature individually.

Memory A Mode (A), Memory B Mode (B)

Set to the white balance saved in Memory A or Memory B.

When the [WHT.BAL] switch is set to “A” or “B”, pushing the [AWB/USER8] switch upward or pressing the user button assigned with the “AWB” function executes Auto White Balance. The white balance will be automatically adjusted and the adjusted value will be saved in Memory A or Memory B.

Prepare the camera recorder.
Set the [POWER ON/OFF] switch to “ON”.
Set Full Auto mode to off using the user button assigned with “Full Auto”.
Set the [IRIS A/M] mode switch on the lens to “A”.
Set the [ND FILTER] switch according to the lighting.
Set the [WHT.BAL] switch to “A” or “B”.
Locate a place with similar lighting conditions as the object to be shot, place a white object near the center of the screen and zoom in to fill the screen with white.
Push the [AWB/USER8] switch upward or press the user button assigned with the “AWB” function.

The white detection frame appears when Auto White Balance is activated. Fill the frame with white completely.

While Auto White Balance is starting up, “A  AWB  ” or “B  AWB  ” appears on the screen. ( AWB mark appears blinking)

After the correct white balance is obtained, an estimated value of the current color temperature is displayed.

GY-HC900 AutoWite_Ope02
Caution

Do not use highly reflective objects, such as metals. Doing so may result in improper white balance adjustment.

The Auto White Balance function cannot provide optimum white balance with an object outside the adjustment range, for example when it contains only a single color or not enough white color.

Error Message

If the Auto White Balance adjustment is not correctly completed, one of the following messages will appear for about 3 seconds.

Message

Status

Auto White * NG: Object
(*A or B)

Displayed when there is not enough white color on the object, or when the color temperature is not suitable.

Use another white object and adjust the white balance again.

Auto White * Error: Low Light
(*A or B)

Displayed when the lighting is dark. Increase the lighting and adjust the white balance again.

Auto White * Error: Over Light
(*A or B)

Excessive illumination.

Displayed when the lighting is too bright. Decrease the lighting and adjust the white balance again.

White Paint Adjustment

You can fine-tune the white balance saved in Memory A or Memory B.

Select [Camera Process] arrowR [White Balance] arrowR [AWB Paint] and press the Set button ( REC button ).

The White Paint Adjustment screen appears.

WhitePaint00_890
Adjust the R and B values.

Use the cross-shaped button ( U_botton D_botton ) to adjust R value and ( L_botton R_botton ) to adjust B value.

WhitePaint_890
Press the Set button ( REC button ).

Returns to the [White Balance] screen.

WhitePaint02_890
Memo

Executing Auto White Balance will usually clear the White Paint Adjustment value. But when [Camera Process] arrowR [White Balance] arrowR [Clear Paint After AWB] is set to “Off”, values will not be cleared even when Auto White Balance is executed.

If [White Balance] is assigned to the user button, pressing the assigned user button will display the AWB Paint Adjustment screen.

Vertical Shading Adjustment

Adjustment of white shading is needed when you have changed the lens.

Although white balance may be appropriate at the center of the image, this may not be the case at the top and bottom areas.
If this is the case, the image will appear greenish or yellowish. This phenomenon is due to the characteristics of the lens. The process of correcting this phenomenon is referred to as vertical shading adjustment.

Perform this process after adjusting the white balance.

Setup Prior Adjustment

Obtain the white balance on the camera.
Set the control of the camera lens as follows.
Set the iris to F4.0 or narrower to obtain the appropriate brightness.
If the brightness is insufficient at F4.0, obtain the appropriate brightness such as by adjusting the lighting.
When using a zoom lens, set to the center of the zoom adjustment range.
Fill the monitor screen with a pattern box of a uniform light source, or a piece of white (plain) paper that is uniformly illuminated.
Set the chroma level of the monitor to the maximum.
Check the monitor screen.

There is no need for adjustment if there is no color at the top and bottom of the screen.

If the top of the screen is greenish and the bottom is reddish or vice versa, continue this adjustment.

Adjusting the Vertical Shading

Set [Camera Process] arrowR [White Balance] arrowR [V. Shading] to “On”.
Select [Adjust...] in [V. Shading] and press the Set button ( REC button ).

The Vertical Shading Adjustment screen appears.

WhiteShading_890_02
Press the [USER1] button to set to perform automatic adjustment.

You can use the R, G, B channels individually to adjust the value of the evaluated level meter up to a margin error of ±1 from the median value.

Adjust manually.

If you want to adjust manually after automatic adjustment is performed, follow the steps below.

You are recommended to adjust the G (green) level only.

If manual adjustment in not necessary, adjustment is complete at step 7.

Use the cross-shaped buttons ( L_botton R_botton ) to select the item to adjust from [R]/[G]/[B].
Adjust the setting value using the cross-shaped buttons ( U_botton D_botton ).

Adjust the sliding bar for setting while referring to the evaluated level meter.

Adjust the values such that the evaluated value falls almost at the center of the meter using the D_botton cross-shaped button if the evaluated value of the channel to be adjusted is larger than the median value, and the U_botton cross-shaped button if the evaluated value is smaller than the median value.

Press the Set button ( REC button ) to save the setting.

Make sure to press the Set button ( REC button ) to save the setting.

Pressing the [CANCEL/RESET] button discards the setting and returns to the menu screen at the next higher level.

Memo

There may be some delay in the changes of the evaluated value after pressing the cross-shaped button ( U_botton D_botton ).

Increasing the setting value suppresses the colors at the bottom and enhances the colors on top.

Adjustment is not possible in the following cases. An error message will appear.

When the top and bottom ends of the frame are overexposed

When the top and bottom ends of the frame are underexposed

When there is significant difference in the level between the top and bottom ends of the frame

What is evaluated value?

This is a relative value (difference between the top and bottom ends) with respect to the average value of the R, G, B channels within the evaluated value detection frames at the top and bottom of the LCD monitor or viewfinder.

The evaluated value is positioned higher than the center of the evaluated level meter when the level at the top is higher than that at the bottom end. Similarly, the evaluated value is positioned lower than the center of the evaluated level meter when the level at the top is lower than that at the bottom end.

Adjust the evaluated value such that it falls almost at the center of the meter.