SVS-Vistek HR Series, Manual

Page: 24 / 102

SVS-VISTEK
Feature description 24
6.1.11 Gain
Setting gain above 0 dB (default) is a way to boost the signal coming
from the sensor. Especially useful for low light conditions. Setting gain
amplifies the signal of individual or binned pixels before the ADC.
Referring to photography adding gain corresponds to increasing ISO.
Increasing gain will increase noise as well.
add 6 dB double ISO value
6 dB 400 ISO
12 dB 800 ISO
18 dB 1600 ISO
24 dB 3200 ISO
Table of dB and corresponding ISO value
NOTICE
Gain also amplifies the sensor’s noise. Therefore, gain
should be last choice for increasing image brightness.
Modifying gain will not change the camera’s dynamic
range.
noise caused by too much gain
Auto Gain
For automatic adjustment of Gain please refer to auto exposure .
When using autogain with steps of gain the non-continous gain
adjustment might be visible in final image. Depending on your
application it might be preferrable to use fixed gain values instead and
modify exposure with exposure time.