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internal brightness reference level through auto Exposure Comp. to control
the brightness of camera. The value of Exposure Comp. is selectable from
<0> to <16> and the gain varies from -10.5 dB to 10.5 dB. Each step is 1.5
dB; the Exposure Comp. vaue <7> is equal to gain value 0 dB. The camera
will not compensate brightness when the Exposure Comp. is set to <OFF>.
The default setting is <OFF>.
♦ BRIGHT
The brightness control function adjusts IRIS and AGC gain using an internal
algorithm. The brightness is controlled by gain when the light condition is
dark and by iris when the light condition is bright.
♦ SHUTTER
With this option, the SHUTTER speed takes main control of the exposure,
and both IRIS and AGC will function automatically in cooperation with
shutter speed to achieve consistent exposure output.
♦ GAIN
The auto GAIN control function takes main control of exposure with priority
over SHUTTER and IRIS. The internal circuit will function automatically to
get consistent exposure.
♦ IRIS
With this option, the IRIS function adjust the exposure in higher property.
SHUTTER speed and AGC circuit will function automatically in cooperating
with IRIS to get consistent exposure output. The opening of a lens controls
the amount of light reaching the surface of the selected device. By increasing
the F-stop number (F/1.6, F/2, F/2.4, etc.), less light is permitted to pass.
¾ 22x MODEL / 23x MODEL
♦ AUTO
In this mode, the camera’s Shutter, IRIS and AGC control function work
automatically to compensate the light exposure of image sensor for consistent
video output level. IRIS OFF SET is used to set the level of IRIS variation.
♦ SHUTTER
With this option, the SHUTTER priority is higher than IRIS and AGC; IRIS
and AGC circuit will function automatically in cooperating with SHUTTER