Zoom camera with automatic power-shutoff function and the automatic power-shutoff method thereof

A method for automatically shutting off power of a zoom camera with an automatic power-shutoff function including a power supply for supplying power, a body tube-moving unit for moving a body tube, a body tube position detector for outputting a signal corresponding to a focal distance, a controller for shutting off power automatically, and a switch including a power switch, comprising:

• supplying power from the power supply by turning on the power switch;
• determining whether all switches of the camera have not operated during a first stop-time period;
• determining whether a current position of the body tube is in a wide-angle position through the body tube position detector, if the controller determines that the first stop-time period has elapsed without any operations of the camera;
• positioning the body tube in the wide-angle position by driving a zoom motor of the body tube-moving unit, if the controller determines that the body tube is not in the wide-angle position;
• determining whether all switches of the camera have not operated during a second stop-time period;
• and
• putting the body tube in a closed position, and thereafter shutting off the power if the controller determines that the camera has not operated during the second stop-time period.