HIKVISION HiLook PTZ-T5225I-A User Manual page 22

responding to the lighting conditions. It is the default mode.
IRIS: User-defined iris value, auto shutter and auto gain. It is the iris-priority mode. Please
define the iris value according to related content in this section if you choose IRIS mode.
SHUTTER: User-defined shutter speed, auto iris and auto gain. It is the shutter-priority mode.
Please define the shutter speed according to related content in this section if you choose
SHUTTER mode.
MANUAL: User-defined iris, gain and shutter. Please define the iris value, gain value and
shutter speed according to related content in this section if you choose MANUAL mode.
 Set the Iris Value
The IRIS value measures the amount of light entering to the lens.
Iris is fully closed at the value 0 and fully open at the value 17.
 Set the Gain
1. Gain value. The value of gain indicates the amplification degree of the original image signal.
2. Gain limit. The higher gain value you set, the more noises will appear in the image. You can
set the maximum user configurable gain value to limit the gain range and control the noises in
the image.
You need to change the IR CUT FILTER as DAY or NIGHT mode, and set the AE MODE to
MANUAL before you adjust the gain value.
 Set the Shutter
Purpose:
The speed of the electronic shutter controls the amount of light entering to the lens in a unit of
time (a second). You can manually configure the shutter speed for the speed dome, and you can
also enable the slow shutter function for low lighting circumstances.
(1) Shutter speed. The larger you set the SHUTTER value (the faster the shutter speed is), the
fewer the amount of entering light per second is, and the darker the image is.
The value of X indicates that the shutter speed is 1/X second. If you set the SHUTTER
value bigger (shutter speed is faster), the amount of entering light per second is fewer,
and the image is darker.
(2) Slow shutter. Set SLOW SHUTTER to ON, the shutter speed can automatically slow down to
extend exposure time under low lighting circumstances to obtain clearer image.
Task 7: Configure exposure compensation.
You can adjust this value to increase the brightness of the image.
Task 8: Configure white balance.
You can set WHITE BALAN as HAUTO, AUTO, INDOOR, OUTDOOR, SELFDEF (self-defined), ATW
HD-TVI Speed Dome User Manual
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