A camera assembly has a mount defining an optical axis. The mount has
opposed first and second stops. A rocker pivots between the stops. An
over-center mechanism biases the rocker toward the nearer stop. A lens
turret has primary and secondary openings. The lens turret rotates with
the rocker between a first configuration and a second configuration upon
pivoting of the rocker between first and second positions. The rocker is
movable in a direction parallel to the optical axis, independent of the
lens turret in both configurations.