The following is a list of resources for remote control cameras
by Douglas Lyon CopyRight 2000
Remote Control for Videoconferencing- An approach that uses Java for controlling a variety of video cameras.
Canon makes a Canon VC-C1 which has perl script control from a linux box, as well as Java control. It is $1000.
Panasonic makes a nice conference camrera, at http://www.panasonic.com/industrial_oem/other/other_components_videoconferencing_spec.htm
Parker Vision has a camera (for around $3k) at http://www.parkervision.com/