User`s manual

AW00098504000 Features
Basler ace Camera Link 157
10 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 47, increasing the gain
increases the slope of the response curve
for the camera. This results in a higher gray
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),
1023 (in modes that output 10 bits per pixel),
or 4095 (in modes that output 12 bits per
pixels) is reached. For example, if you found
that at your brightest exposure the gray
values 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.
This section (Section 10.1) describes the basic theory of gain and how gain can
be adjusted "manually", i.e., by setting the value of the gain raw parameter.
The camera also has a Gain Auto function that can automatically adjust the gain.
Manual adjustment of the gain parameters will only work correctly if the
Gain Auto function is disabled.
For more information about auto functions in general, see Section 10.9 on
page 189.
For more information about the Gain Auto function in particular, see Section 10.9.4
on page 199.
Fig. 47: Gain in dB
Gray Values
(12-bit) (8-bit)
Sensor Output Signal (%)
(10-bit)
4095 1023 255
12 dB 6 dB 0 dB
0 25 50 100
0