Standard Features; Gain - Basler ace acA640-90gm User Manual

Standard Features

10 Standard Features
This chapter provides detailed information about the standard features available on each camera.
It also includes an explanation of their operation and the parameters associated with each feature.

10.1 Gain

The camera's gain setting is adjustable. As
shown in Figure 76, increasing the gain
Gray Values
increases the slope of the response curve for
the camera. This results in a higher gray (12-bit) (8-bit)
value output from the camera for a given
amount of output from the imaging sensor.
Decreasing the gain decreases the slope of
the response curve and results in a lower
gray value for a given amount of sensor
output.
Increasing the gain is useful when at your
brightest exposure, a gray value lower than
255 (in modes that output 8 bits per pixel) or
4095 (in modes that output 12 bits per pixels)
Sensor Output Signal (%)
is reached. For example, if you found that at
your brightest exposure the gray values
Fig. 76: Gain in dB
output by the camera were no higher than
127 (in an 8 bit mode), you could increase the
gain to 6 dB (an amplification factor of 2) and thus reach gray values of 254.
Basler ace GigE 185