Panoramic

Good evening, I have completed an install and one camera seems to be giving me a fit. I have replaced the camera with no change, so it has to be something in the area effecting it. I have two cameras in the vicinity and one works perfectly and the other has a halo. I have unplugged the other camera nearby to make sure it's IR's weren't the problem and covered up the lights. None of them have been a positive solution. Any help would be greatly appreciated!