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6.0 Operation
6.5 Camera Iris Control
The iris is a physical opening within the lens that controls how much light reaches the
camera sensor. In some conditions it may be beneficial to manually adjust the iris on the
PTZ-550
A HD
Camera System. To open the iris, press UP on the Iris Control rocker
switch (Figure 8), to close the iris press DOWN.
NOTE: The camera will leave Auto Exposure mode when any of the Iris, Shutter, or Gain
switches (C, H, and G) are manually adjusted. Incremental pushes are required to operate
this switch. Holding down the switch will NOT continuously make adjustments.
FIGURE 8
6.6 Camera Shutter Control
The shutter speed electronically controls exposure time and frame rate of the camera. A
slow shutter speed provides a brighter image with a slower refresh rate. A fast shutter
speed provides a dimmer image with a faster refresh rate. To increase the shutter speed,
press UP on the Shutter Control rocker switch (Figure 9) and to decrease the shutter speed,
press DOWN.
NOTE: The camera will leave Auto Exposure mode when any of the Iris, Shutter, or Gain
switches (C, H, and G) are manually adjusted. Incremental pushes are required to operate
this switch. Holding down the switch will NOT continuously make adjustments.
