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is there a way to calculate the optimum height for a camera

my starlight displays the video way to wide small cars for example get really wide displayed if i turn the lens in my menu to 90 degrees its correct but the image then displays it all vertically should i manually turn the lens itself on the camera ? another one i cannot find any manual of...

i have a hikvision ds-2cd3345-i camera and if i connect it to the 7204 nvr recorder i cannot get it working if i connect the camera to a poe switch and i try to find the camera with sapd it wont find it also the led lights up when i put the lan cable in so i guess the camera should work...

i have a dh-nvr1108-p with poe ports got my ptz camera working on it but it wont record on motion do i need to upgrade firmware from the nvr or the camera to get this to work ?? below is my nvr info type NVR Record Channel: 8...