andriusst

Hi everyone, I'm building DIY CCTV system to record the car park where I keep my car. I am having problem getting clear picture. I'm using focus handle on a lens to focus the picture but if I get middle of the picture in perfect focus then sides become blurred. I would be grateful if someone could point out what I am doing wrong. Am I missing some optics piece or got incompatible setup? The setup is IQEye 702 camera, C-CS mount adapter and 1/2" 50mm fixed lens with manual iris and focus (cheap). Thanks in advance. Andrius

thank you both for taking time to reply. I believe I'm seeing is a combination of both. I won't be able to adjust iris any time soon as I haven't got the ladder and neighbours who do have it are away on holiday. But I am thinking that closing down the iris a bit will have a negative impact on night time picture. So auto iris would be good. Camera however does not have iris control circuit. Can I get a lens with auto iris that has a light sensor on it?