Quasar CM-4321 User And Installation Manual page 23

Note:
Best focusing results can be achieved when the lens iris is fully open (such as at
night in low light). This prevents loss of sharpness if light levels are reduced at night.
5. During daylight hours, from the web interface's Camera > Exposure screen, select
Exposure Setting > Auto Shutter.
6. Press <√> to confirm the new setting.
Installation
11