© Hikvision 
  Iris Priority: 
The  value  of  iris  needs  to  be  adjusted  manually.  The  shutter  and  gain  values  will  be 
adjusted automatically according to the brightness of the environment. 
You  can  limit  the changing  range  of  shutter  in  Iris  Priority  mode  for  better  exposure 
effect. 
 
Figure 6-25 Manual Iris 
  Shutter Priority:   
The value of shutter needs to be adjusted manually. The iris and gain values will be 
adjusted automatically according to the brightness of the environment. 
You can limit the changing range of iris in Shutter Priority mode for better exposure 
effect. 
 
Figure 6-26 Manual Shutter 
  Manual:   
In Manual mode, you can adjust the values of Gain, Shutter, and Iris manually. 
Note: 
This function varies depending on the camera models.   
 
Figure 6-27 Manual Mode 
  Limit Gain 
This feature is used to adjust gain of the image. The value ranges from 0 to 100. 
  Slow Shutter 
This function can be used in underexposure condition. It lengthens the shutter time to