Abstract: A range finding digital camera (100) includes a main digital camera and a laser range finder (18) assembled to the main digital camera via a serial or a parallel connection interface. The main digital camera includes an image display (13) and a controller (15) for inputting commands to the laser range finder. The laser range finder includes an optical transmitter (181) for transmitting a transmission laser beam and an optical receiver (182) for receiving a reflection laser beam. The laser range finder is used for measuring the distance between an object and the range finding digital camera in accordance with the time-lag between the transmission time of the transmission laser beam and the receiving time of the reflection laser beam. The measuring result can be displayed on the image display and provided for the digital camera to focus or to calculate a practical dimension of the object.