More image noise when it rains.

[blake]

I've noticed that when it rains or is damp out, my night image gets more noisey on my 3MP Hik turret cam. Anyone else have this issue? Only the hik does this, my other cams look fine.

 

[acvb]

Ends of RJ45 getting wet... needs better protection. Also check to see if cable is any good (might be damaged or ends are bad, wet). Buy a new cable and test.

 

[alastairstevenson]

Ends of RJ45 getting wet

This won't add noise on a digital system. The data is either on or off, unlike analogue which is all shades of grey.
I'd guess that more noise may be linked to reduced light level - but as to why, no idea.
It would be interesting to see an image.

 

[badmop]

I'd imagine maybe more movement in the image. Kind of like compression artifacts in action movies. You will see pixelation with blocky objects in fast motion scenes, or fire, smoke, etc.

 

[blake]

I will post pics when I get in.

 

[blake]

Here ya go. Image only gets this noisey when its raining or after it has rained.

 

[gwminor48]

Sounds like something to do with moisture. I don't see any change in my Hikvisions when it rains, day or night, and it sounds like your other cameras don't have this problem either.

 

[awlectric]

Mine do the same. Only when it rains too. I think it has something to do with reflection of some sorts

 

[gwminor48]

Mine do the same. Only when it rains too. I think it has something to do with reflection of some sorts

That's possible, I don't have as much ambient light as @blake does in his picture. I see something a little similar to that on video during storms after lightning when the camera is trying to adjust to the lighting situation.

 

[blake]

Wondering if I step down to a 2MP cam if I'll have this problem? Anybody want a 3mp hik turret for a 2mp?

 

[Fruit]

Probably two options that will lessen the noise:

1. turn down the gain level
2. turn up the digital noise reduction level

 

[blake]

I don't want to have to change setting when it rains because the picture is perfect any other time.

 

[blake]

If anyone wants this 3MP cam, I'll swap for a 2mp..

 

[awlectric]

I was trying to reply to you before but pressed the wrong button instead lol. @blake- try mounting the camera lower, and at more of a horizontal angle , fool with It a bit before you get rid of It. I think mabey this may help. Also try to swap another similar model camera in this ones place to see if its the camera itself. It helped mine a bunch.Take what I say with a grain of salt tho Because im still learning too. They can be fidgety"
Evening

 

[MartyO]

First look, it seems to be dark areas have the noise, not bright areas ???

 

[blake]

Can't mount it any lower. It's mounted under my soffit. Hopefully it doesn't rain tonight and I will post another shot.

 

[wxman]

I would guess it has to do with either:

1. The IR light reflecting off of the raindrops and/or hydrometers in the saturated air
2. The raindrops/hydrometers filtering out some of the IR light and ambient lighting from across the street
3. The wet driveway/street reflecting more light onto certain parts of the image than normal

 

[blake]

Still not as happy with 3mp as I am with 2mp at night even with all of my exterior lighting. If anyone wants to trade this 3MP for a 2MP, let me know.