User guide

User interface Main UI 49
Following parameters are displayed:
• Sensor Fps: Currently set frame rate of sensor, adjustable from
0.750-60.000 fps.
• Shutter Angle: Currently set shutter angle of sensor, adjustable
from 5.0-358.0°. Shutter Angle and sensor fps determine
exposure time of the sensor in seconds by the following
equation: 1/(360*Fps/Angle)
• Exposure Index: Currently set exposure index rated in ASA.
ALEXA has a base sensitivity of 800 ASA, the camera rating can
be adjusted from 160-1600 ASA.
Note: ASA rating is identical to ISO rating.
Note: Exposure Index is not applied to Arriraw signals.
• White Balance: Color temperature of the light source the camera
is currently adjusted for. Can be adjusted from 2000-11000 Kelvin.
In addition to the red/blue correction of the white balance, ALEXA
can also compensate for a green/magenta tint.
• Time Code: Displays current time code including source
(INT=internal or EXT=external source). Frames are not displayed,
instead the timebase of the time code is shown in small digits.
• Sync mode: When the camera is set to external sync, an
information is displayed in the Homescreen whether the camera
has been set to Master or Slave mode. The information is shown
below the time code.
• Icons:
− Info: Shows that important information is waiting on the Info
screen. White icon signals warning, red icon signals error.
− Thermometer: informs about a sensor temperature problem.
White icon signals small temperature offset (slightly reduced
image quality), red icon signals high temperature offset
(significantly reduced image quality).
Note: A sensor temperature warning or error after bootup is normal until the
sensor has reached its preset temperature.
− Lock: Signals that the UI is locked. Not all buttons are affected.
buttons that still work: USER, HOME, REC, ON/OFF
− SD card: Signals that an SD card is present. The color changes
to orange while the card is accessed.
All icons of the Homescreen: