Issues with ColorVu DS-2CD2147G2-SU Cameras At Night

[dmilner4778]

Hi

Just installed these, they look great during the day but at night they're a smeary / foggy mess.

The dome is all clean, and it looks like the IR LED's are reflecting back off the inside of the dome - any ideas on best image parameters to improve the picture quality?



Thanks in advance

 

[ludshed]

Did you take the inner black shroud out?

 

[wittaj]

Or the gasket rolled or isn't tight.

One of the many reasons why we avoid domes.

 

[Teken]

Baring the two culprits indicated by the other members are you sure the lens / dome isn’t covered by finger grease?!?

The included cloth is there for a reason in case you accidentally touch the lens or the exterior dome is dirty from the final installation.

As it relates to minimizing the impact of IR reflective glare when rain is present. I’ve had great success with RainX / similar (anti) defogging chemicals.

Applying it once a year to the dome reduces the incidence of IR glare dramatically.

NOTE: You’ll want to really test this out on a test unit to validate the chemical doesn’t cause other imaging issues or damage to the outer casing.

Some domes are treated with a UV coating and it doesn’t react well to other chemicals being applied. It goes without saying anti fog chemicals must be thoroughly tested if the environment is extremely hot / humid!

Failure to adhere to this concern can cause the dome to delaminate or impact the electronics due to off gassing!

 

[ludshed]

This was a hik that I dropped and broke that black shroud and when I put the cover back on without it looked just like yours. Fortunately it was inside

 

[sensey3]

Check the camera model again, the DS-2CD2147G2-SU is a ColorVU and does not have IR, which can reflect in night mode. Nonetheless, if it's something with IR, like the DS-2CD2146G2-ISU, you might try adjusting the camera module to point it in a slightly different direction, where the IR LEDs won't overlap the housing, and not toward a wall or other things from which IR can reflect. Another thing is to correct the rubber band at the lens as mentioned by ludshed.
Or just move it inside and use bullet/turret outside, much friendlier casings, dome can be really painful and im using it only when theres a need for IK10 rating.

 

[trempa92]

Classic Dome problems, never gets old.

Whatyou can do is clean as much from insdie and outside, stick additional sponge where current one is that will make dome cover hard to place, but push it so the sponge actually touching cover. This way IR wont reflect back to camera itself.