richterscale

Hello guys. I've recently installed a relatively cheap system (compared to IP camera systems out there) and I have interference problems. I don't have any experience with CCTV cameras so from what I've read I think I need Ground loop isolators for all of the cameras in my system. I installed one of these on the camera with the longest cable running from the DVR with some decent results, but not the elimination of all of the interference. What do you guys suggest I do next, install ground loop solators on all of the camears or is there another option? Thanks

I had never heard of the Moire effect. Basically I just need better quality cameras next time I get around to investing in a better system because I can't control the things the sensor sees in the environment. I guess it makes sense because on some days the image clears up on his own for no apparent reason. Thanks for your reply!