There is a spot on the image of Swift or Owl series cameras

Please try the following steps to check:

1. Try OSD Menu > DPC function:

2. Remove the back plate and take the PCB out. Clean the surface of the sensor with clean cotton cloth:

3. Remove the lens and clean the 2 pieces of glasses of the lens with clean cotton cloth.

4. If the problem persists, please try another lens. If another lens works well, then the original one has a problem. If the problem persists after installing another lens, the sensor has a problem. 

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