(under subclass 155) Subject matter wherein a photoelement receives the artificial light directly from the illumination means to measure the light output of the illumination means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92, for lens characteristic compensating by selecting effective photoelements during focusing.
96, for focusing or rangefinding with accumulation photoarray and time control.
100, for dual purpose photoelement in focusing or rangefinding.
111+, for focusing or rangefinding devices with optical details of a photoelement system.
162, for photocell in the termination control of an illumination means. 171, for photocell used as a flash trigger.
269, for a photocell having specific camera location and responsive to an adjacent light emitter in general.
