RANGE FINDER, PHOTOGRAPHING DEVICE, CONTROL METHOD, STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a range finder capable of shortening range finding time. SOLUTION: A control means 101 changes the drive frequencies of signal charge accumulating means 204a, 204b and independently drives and controls them during a first period (charge accumulation period for determining the accumulation condition) or during the other second period (residual charge clear period and communication period with outside) based on the operation states of the signal charge accumulating means (circulation shift registers) 204a, 204b of a range finding sensor 109.