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change in brightness

Posted: Sat Feb 11, 2006 4:18 pm
by gungner

Two of my four cameras are getting darker and darker during the day and then they get back to normal brightness when it gets dark outsude. Before the update to 1.22 it was only one camera and I thought it was a problem with the camera, but now when I get it on two cameras I wonder.

For a sample please have a look at

Anything to tweek on zma?

cheers, tord[/url]

Posted: Sat Feb 11, 2006 11:34 pm
by mlrtime3
Mine doesn't get that dark but I have basically the same problem. The brightness seems to change randomly during the day and it causes the alert to trigger.

I don't know if this is an issue with the camera because I've never seen it with the analog out but I'm not sure.

Posted: Tue Feb 21, 2006 5:41 pm
by zoneminder
I'm sorry I don't have the link but someone posted a brightness control script (try the User Contribs forum) which was for a different purpose but which might help.

Posted: Tue Feb 21, 2006 5:55 pm
by jameswilson
usually this indicates a problem with the lens or ei circiut on the camera. To confirm run an internal camera through zm or a normal video source such as tv to test


Posted: Wed Feb 22, 2006 7:15 pm
by gungner
Thanks for the information. I found the script at : ... brightness

and will give it a try. Thanks