Mamiya CDS Magnifier Hood for Twin Lens Reflex C330, C220

CdS Magnifying Hood. This is a spot metering finder with a CdS exposure meter incorporated in the magnifying hood. Since the meter measures light which passes through the lens, the correct exposure setting is easily obtained. A compensating exposure factor need not be considered even if the bellows is extended. When employing a color filter, however, compensating exposure must be made by considering the filter exposure factor. (By attaching the same color filter to the finder lens, such compensation is unnecessary.)