A camera for use with a film cassette having a movable light lock supported within a film egress/ingress slot to be moved closed after a filmstrip is wound into the cassette, comprises a cassette-receiving chamber, and a movable driver to be moved to close the light lock before the cassette is removed from said chamber, and is characterized in that:
- an exterior ingress opening to said chamber is provided to admit an insertion tool into the chamber to push the cassette out of the chamber;
- and
- said driver is located for the tool to push the driver out of said chamber with the cassette, whereby said camera will be disabled.