3. Web-based Interface
26 User Manual
Auto IRIS Mode
Select Auto IRIS Mode to configure the exposure settings with the auto iris control enabled.
Method:
Select which area of the image will be used to measure the amount of light to achieve
best exposure.
• Center Weighted:
Exposure metering is averaged over the entire frame but the emphasis is
placed on the central area.
• Object Targeted:
Define your target by clicking squares displayed on the image and then
press
Save Spot Window
to save the setting.
EV:
Decrease the value if images appear too light (overexposed). Increase the value if images are
too dark (underexposed).
Convergence Speed:
Select the lens’ convergence speed from the drop-down list. Higher the
convergence speed, the faster the lens iris opening responds to changes in light levels.
Shutter Settings:
Slow Shutter:
Set the exposure time from a set of fixed shutter speeds.
Manual Exposure Time:
Manually input a desired exposure time.
Gain Settings:
Max. Gain:
Specify the maximum amount of amplification applied to the image. A high level of
gain allows images to be viewable in very low light, but will increase the image noise.
Manual Gain:
Select a gain value from 0 to 16.
Tip
Caution
Warning
Note
For optimal LPR results, users are recommended to adjust the Manual Exposure Time and Manual
Gain appropriate for the actual environment at the monitored site.
