Manually settable camera with lightresponsive means for aiding in the setting of thecamera

Claim 1

IN CAMERA, IN COMBINATION, A PAIR OF MANUALLY OPERABLE MEANS FOR RESPECTIVELY SETTING THE APERTURE AND EXPOSURE TIME OF THE CAMERA; TOTALIZING SCREW MEANS INCLUDING A PAIR OF PLASTIC RINGS IN THREADED ENGAGEMENT WITH EACH OTHER; SUPPORT MEANS SUPPORTING SAID RINGS FOR ROTATION ABOUT THE OPTICAL AXIS AND RESTRAINING ONE OF SAID RINGS AGAINST AXIAL MOVEMENT WHILE FREEING THE OTHER OF SAID RINGS FOR AXIAL MOVEMENT; A PAIR OF MOTION TRANSMITTING MEANS RESPECTIVELY CONNECTING SAID PAIR OF MANUALLY OPERABLE MEANS WITH SAID PAIR OF RINGS FOR TURNING THE LATTER IN RESPONSE TO ACTUATION OF SAID PAIR OF MANUALLY OPERABLE MEANS, AND TOTALIZING MEANS AUTOMATICALLY POSITIONING SAID AXIALLY MOVABLE RING IN AN AXIAL POSITION DETERMINED BY THE COMBINATION OF THE SETTINGS PROVIDED BY SAID PAIR OF MANUALLY OPERABLE MEANS; LIGHT-RESPONSIVE MEANS FOR INDICATING TO THE OPERATOR WHEN THE CAMERA HAS BEEN PROPERLY SET ACCORDING TO THE LIGHTING CONDITIONS; AND THIRD MOTION TRANSMITTING MEANS COOPERATING WITH SAID AXIALLY MOVABLE RING AND SAID LIGHT-RESPONSIVE MEANS FOR ACTUATING THE LATTER IN RESPONSE TO AXIAL MOVEMENT OF SAID AXIALLY MOVABLE RING FOR INDICATING TO THE OPERATOR WHEN THE CAMERA HAS BEEN PROPERLY SET ACCORDING TO THE LIGHTING CONDITIONS.