@Solla-topee At 0:11 of the video, you can hear the cricket sounds in a short moment, while this sound is made all the time, I can hear it with my ears clearly but in the camera's footage you can...

I've use the C220 for 1 month, and found out that its mic is so bad. It's like the noise reduction too much, makes the recording misses pretty much important sound. The recording is attached to this...

@rsiwal generally something is in front of your camera.

@Solla-topee it's the reflection of the C320 spotlights, looks like there's something like a metal object is in front of the cam's view, you still can see in the background except that bright thing,...

@Runny hmm, the plants on the side may reflects the IR, but not too much. Seems like the night vision algorithm of this model makes the contrast low, I don't have a model here to compare with you,...

@Runny looks like there's something reflects the cam's IR lights, try to adjust the position of the camera lower.