74 | HDZ Series IP PTZ User Manual
The exposure is the amount of light received by the image sensor and is determined by the
width of the lens iris opening, the amount of exposure by the sensor (shutter speed) and other
exposure parameters. With these parameters, users can define how the auto exposure function
works. Users can select the best exposure mode for their operating environment. You can select
a specific Max Gain value, as needed. Select one of the following exposure modes to optimize
the video output for your operating environment:
The camera's shutter speed, iris, and auto gain control (AGC) circuits work
together automatically to produce a consistent video output.
The shutter speed has priority in setting the camera exposure.
The camera will automatically detect the best iris size for the environment, where
the minimum iris size is limited to affect the exposure. This setting will provide a
good depth of field, where objects at different distances from the camera are in
This feature is only supported by the HDZ PTZ models: HDZ20HD(X),
HDZ20HDE(X), HDZ30HD, and HDZ30HDE.
The iris has priority (instead of the shutter having priority) in setting the camera
exposure. Mini shutter speed limitation setting.
The shutter speed, iris, and gain are set manually by the user.