White Balance; Setting A Wb Value; Wb Options; Timecode - ARRI AMIRA User Manual

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7.5.7

White balance

White Balance (WB) is the color balance of the camera that should be matched to the
color temperature of the light in use. There are three methods for setting the white
balance:
• white balance presets
• user-defined white balance
• automatic white balance
White balance is a red-blue adjustment of the image. To adjust the green-magenta
balance, use the color compensation (CC) adjustment. For example, a fluorescent
source will have peaks in its spectrum that cannot be corrected with red-blue white
balance alone. The CC shift can correct these peaks up to a full green or full magenta
gel. One step of CC shift is equal to 035 Kodak CC values or 1/8 Rosco values.
7.5.7.1

Setting a WB value

1. Choose HOME > WB.
The WB switch screen opens.
2. Press the jogwheel to open the WB list.
Note: You can only change the WB for the current switch position.
The WB list is displayed.
3. Via jogwheel, scroll to the desired value.
4. Press the jogwheel to activate the value.
7.5.7.2

WB Options

1. Choose HOME > WB > OPTIONS.
You have the following options:
°
°
Note: WB tracking always uses matrix mode for WB calculation.
7.5.8

Timecode

Timecode ensures that every image of recorded media can be identified with a unique
value and synced with corresponding media, such as sound or the second camera in
a 3D application. When used with other metadata, such as reel names, all recorded
media retains its unique identity.
The following are two ways of using timecode on a production:
Auto WB mode
Sets the calculation method of auto white balance. Matrix analyzes the full
image and uses the image part best suited for WB calculation, while Center
uses the image center area only.
WB tracking on position IV
If activated, moving the WB switch to position IV activates automatic white
balance tracking, where the white balance value is continuously updated based
on the image scene.
Home screen and camera menu