majortom

Most likely in Linux. My wife does recovery of different kinds of hard drives and believe the header just needs to be restored using a recovery program. We are in Southern California.

I have been working with some Hunt CCTV IR cameras at a particular project where the picture at night looks extremely foggy (when there is no fog). On one of the cameras, I was able to get results by moving the camera up a wall 10'. I have not yet moved the other 2, but have temporarily replaced the Hunt IR Domes with Hunt IR Bullet cameras at same locations and the fog at night continues. I am trying to imagine what it is in the picture that causes the difference, when the domes I brought back to my place seem to work OK here. Is it most likely that I do not have enough IR? Too much IR? Too much contrast between light areas and dark areas? Hunt thinks that if I move the others (even a few feet) that I could resolve the issue. But I am looking for an overall rule for the future, as to how to avoid this issue.

I had thought that I had it. Got new dome covers, made sure they were pristine, set low light luminescence to .25, and there was still fog and picture was too dark. Looks like I have to move the cameras or it is reflection from the dome. Problem does not exist without dome covers on.

When they were at clients home, I focused during the day. When I am working on it at my place, I have focused at night and come up with similar scenario (focused at night). I might not have mentioned it before, but I temporarily replaced the domes at the clients with 79G Bullet IR cameras and the same fog effect occurs. So it cannot just be reflection off dome cover. Maybe reflection off a wall. But, again, when I brought the domes back here, I was able to recreate similar effect, that is worse with cover on, but is mostly remedied by turning down the low light luminescence seting from .75 to .25. I picked up Hunts better dome that is WDR and 650 lines in both an IR and non IR version that I hole to test here tonight.

I also added some cam 4 shots from same backyard. Password for page is "CCTV"

See the day and night images at http://www.groundcontrolsatellite.com/index.php/11g28did-upload

The Hunt Domes have a spring loaded, circular separator between the IR emitters and the lens, so this is hard to imagine. It IS a little worse when the cover is on, but I found that by turning down the low light luminescence from .75 to.25, it seems to help quite a bit.