<p>A document camera (100) is used to show image picked up from an object (2) and/or image received from an external apparatus such as a computer (3) on an image display (51). In the document camera (100), an image sensing and processing device (41) senses image of an object (2) and processing the image into an image signal (S2). A display controller (42) controls the display of the image signal. An image synthesizer (43) combines a first image signal (S1) received from an external apparatus (3) with a second image signal (S2) received from the image sensing and processing device (41) and has images represented by the first image signal (S1) and the second image signal (S2) simultaneously displayed under the control of the display controller (42).</p>
