FOCUS DETECTING DEVICE FOR CAMERA

摘要: PURPOSE:To smoothly detect a focus without being influenced by fluctuation, etc., of an output signal image sensor changing focusing range in accordance with contrast and brightness object to be photographed, moving state zoom lens its position, history the defocus quantity or detection mode. CONSTITUTION:An luminous flux which has transmitted through photographic is photodetected 100, based on from this operated arithmetic means 200. In case, if within range, it decided focused deciding 300, also, varying 400, varied such way, can detected 100.