Camera Troubleshoot/Fisheye Dark Ring
From Dahua Wiki
Fisheye camera has a dark ring
- Pictured below is a symptom of incorrect mounting of the lens cover.
- Reference the back of the unit to make sure the lens cover is mounted correctly.
Possible reason: The face plate will sit unevenly upon the camera housing, causing an area of the fisheye video to have an uneven dark ring.