Occurrence condition:

- The camera is installed close to a white fire detector
- The ceiling light is turned off
- The camera is in black & white mode with IR light on

The fire detector reflected the camera's IR light back into the camera.

- Before camera installation:
Install the camera away from the item that can cause reflection

- After camera installation:
Isolate the camera from the item that can cause reflection as much as possible

Occurrence condition:

- The camera is installed close to the white wall 
- The ceiling light is turned off
- The camera is in black & white mode with IR light on

The wall (red striped area in the below picture) reflected the camera's IR light back into the camera

- Install the camera away from the wall

- Shorten the [Maximum shutter] speed in the camera setting

- Lower the [IR LED light intensity] in the camera setting

- Change the angle of view

Occurrence condition:

- The camera is in black & white mode with IR light on
- The TILT angle of the camera is 70-85 degree
- The YAW angle of the camera is 50-100 degree

IR light is reflected against the camera body

- Adjust the TILT angle to within 70 degrees or YAW angle to within 50 degrees

TILT angle:

YAW angle:

Occurrence condition:

- The camera is in black & white mode with IR light on

IR light is reflected inside the housing due to the use of incompatible housing 

- Use appropriate mount brackets
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- Do not use IR light when the surrounding brightness is not low

- Change the angle of view

Occurrence condition:

- The camera is in black & white mode 
- A light source (a ceiling light in this case) is nearby

Bright light from the external light source is reflected in the dome

- Change the camera position or angle of view 

- Protect the camera from the external light source using a light shield

- Adjust the [Maximum shutter] speed in the camera setting

- Select “Auto1” or “Auto3(SCC)” for [Day & Night(IR)] in the camera setting when there is an external light source

Occurrence condition:

- The camera is in black & white mode with IR light on

Note: The image is improved when the dome cover is removed.

The camera is installed under the environment where the dome cover can be exposed to foggy mist

- Relocate the camera 

- Use a camera with a wiper or install a housing on the camera

- Wipe the dome regularly

Occurrence condition:

- The camera is in black & white mode with IR light on
- The TILT angle of the camera is 70-85 degree
- The YAW angle of the camera is 50-100 degree

IR light is reflected against the camera body

- Adjust the TILT angle to within 70 degrees or YAW angle to within 50 degrees

TILT angle:

YAW angle:

Occurrence condition:

- The camera is in black & white mode with IR light on
- The camera is installed on the exterior wall or rain gutters

The plastic straps tied to the rain gutters reflected the camera's IR light back into the camera. 

- Change the camera position or angle of view of the camera  

- Remove the ran gutters and plastic straps

White shadows appear on the left side and right side of the camera image at night.

Occurrence condition:

- The camera is in black & white mode with IR light on
- The camera is installed on a pole in a rural zone
- There are no light sources or obstacles

Spider webs in the angle of view reflected the IR light from the camera

- Remove the spider webs

- Clean the front cover regularly

Installation:  On the ceiling
Distance between camera and the wall: 0.3 m (0.98 feet)

Occurrence condition:

- The camera is in black & white mode with IR light on
- The camera is installed close to the wall

The camera is installed close to the wall and the IR light from the camera is reflected against the wall

- Install the camera farther than 3 meters (9.84 feet) away from the wall

Occurrence condition:

- The camera is in black & white mode with IR light on
- The camera is mounted on the ceiling at the tilt angle of elevation 30° (from the horizontal line)
- The zoom ratio is set to the wide end

IR light is partially blocked by the area circled in blue in the below picture, when the camera tilt angle is at around the maximum elevation of 30°

- Adjust the zoom ratio to the tele side

- Adjust the tilt angle to the horizontal line

Occurrence condition:

- The camera is in black & white mode with all the IR lights on
- Some internal camera cables are close to the dome cover 

IR light is reflected against the wall and the internal cables are reflected in the dome cover, due to the improper cable placement as shown in the below picture

Reference: When the internal cables are placed behind the camera sensors properly

- Install the camera farther than approx.120mm (0.39 feet) away from the wall

- Place the internal cables behind the camera sensors

- Individually turn off the IR lights close to the wall ->In this case, turn off the IR light #5 and #6 in the below picture

How to turn off the IR lights:
Go to [Live]-> [Detailed setting]-> [Image/Audio]->[Image quality]->[Image adjust]->[Day & Night(IR)]->[IR LED Individual setting], and select "Off" for the IR lights close to the wall.

Occurrence condition:

- The strong sunlight enters into the camera lens

Note: The glare does not appear when the dome cover is removed.

The sunlight is reflected on the dome cover. 

Zooming enlarges the glare as below:

- Relocate the camera to avoid the effect of sunlight 

- Block the sunlight using an appropriate sunshade
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Occurrence condition:

- Shooting an image in a dark place
- A bright light source is on the image

The bright light from the lighting entered into the camera lens and caused the spread of light around the lighting on the image (halation).

To avoid halation:
- Set [Super Dynamic(SD)] to "Off" and
- Set mask area on the light spreading area.