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52 - User's Manual
Auto: If you set Exposure mode as Auto, the Exposure time and Gain control will not be
congurable since the sensor library will automatically adjust the value according to the ambient
light. Then you can congure iris mode as “indoor” or “outdoor” to reach the best image quality.
■ Iris mode (When the Auto Exposure mode is selected):
Select Indoor or Outdoor iris mode to
adapt to the installation. The preset iris aperture setting will apply.
■ Iris sensitivity (When the Auto Exposure mode is selected): This option tunes how quickly the
P-iris adapts to changes in environments for controlling image quality and depth of eld. 10 is the
most sensitive, and 1 the least.
■
Iris Adjustment (this option is available when the Manual mode is selected on IP8172P):
The IP8172P comes with a P-iris lens, which controls the iris opening with extreme precision by
its built-in stepping motor. Via software controls, the lens maintains the iris opening at an optimal
level at all times, resulting in superior sharpness and depth of eld as well as image quality.
You can manually tune the value of iris opening (aperture size), which can range from 1 to 100
(long depth of eld).
• The smallest number, 1, means the iris is narrowed down as much as possible (smallest
amount of light received with longest depth of eld).
• The largest number, 100, means the iris is open as wide as possible (largest amount of
light received with shortest depth of eld).
Once set, the iris will stay at current position as long as the lighting condition allows. When
external lighting conditions exceed an acceptable range, the P-iris mechanism adjusts itself.
■ Iris response time:
The Iris speed slide bar is for adjusting the opening or closing speed of
the iris from 1 (Fast) to 10 (Slow) steps. You can also adjust the Gain control and Exposure
time according to the ambient light.
■ Iris Adjustment & Iris response time: Y
ou can manually adjust the Iris Adjustment and Iris
response time according to the ambient light. Noted that these functions are only available for
IP8172P.