Micron Technology USB Camera - Manual (Page 31)

Sensor Control: Exposure
27
Chapter 4
S
ENSOR
C
ONTROL
Exposure
The camera Exposure parameter is similar to exposure notion in photography. It
defines time for which the sensor elements are gathering the energy of light.
Use the Exposure slider to adjust the camera exposure time. The current exposure time
in milliseconds (ms) is displayed above the control. This value depends on viewport
height, decimation and sensor frequency.
To perform Autoexposure, in the Device menu select the Auto Exposure command or
simply press E keyboard.
Gain
Use the Gain controls to change the signal gain of the sensor. Increasing Gain is
reasonable when light condition is poor and increasing time of exposure does not help.
For color models Gain can be controlled independently for Red, Green and Blue
channels (R, G, B).
Checking the Lock Ratio checkbox allows controlling gain on three channels
simultaneously keeping the fixed R, G, B gain ratio.
All the Gain sliders control the camera's hardware gain amplifier. The R, G and B gain
sliders control the software gain for each color channel.
Use the 'White balance (Hard)' menu item (Device> White Balance (Hard) or the
'Alt+W' keyboard shortcut to balance Gain of all three channels so they are equally
intense.
Note: The R, G, B channels are disabled when running the SMX-M81M Camera, as well as White Balance (Soft) and
White Balance (Hard)
Note: Auto Exposure is done automatically every time White Balance (Hard) is performed
Frequency
This control defines the pixel clock frequency of the sensor. The lower Frequency, the
higher maximum possible Exposure time and the lower Frame Rate (
see chapter “Frame
Rate Control” ). Use the dropdown menu (near the Gain and Exposure controls) to define
Frequency.