A camera focusing system and method based on line of sight placement

The present invention discloses a camera focusing system and method based on the visual impact point, the image transmission system comprising, a line of sight of the impact point location system, the focusing system and the AF circuit. Said method comprising: a user placement sight line calibration and identification; monocular image viewfinder acquires a user; generating a calibration model according to the user when the image corresponding to the calculated single eye sight landing position on the viewfinder; of their said placement position, the focus on the subject by controlling the shutter button. Autofocus method provided in the embodiment of the present invention, to achieve a view of the user placement calibration shutter button and a visual line for positioning and focus of the focus, flexible and conform to the user habits.