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How Backup Cameras Work
On the face of it, the idea is simple: When you put your car into Reverse, a camera mounted at the rear of the vehicle turns on and sends an image to a monitor to show what's behind you. But the reality is a bit more complicated. Backup camera systems, even at their most basic, are fairly sophisticated pieces of technology, and they're getting more high-tech all the time.
The complexity begins with the image that is captured by the camera. Rather than transmitting the picture that a typical camera might see, backup camera systems are actually designed to send a mirror image to the monitor so the orientation is correct when you look http://www.autoailight.com/car-fog-light/square-car-fog-light/