| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent rapid voltage lowering of a power source battery, by executing only either one of blurring correcting or preliminary light emitting, instead of simultaneously doing both, depending on a state of voltage of the power source battery. SOLUTION: This lens device 1 is provided with a microcomputer 3 for blurring correcting control, the microcomputer 16 for an ultrasonic motor, the microcomputer 24 for communication or the like therein, while the microcomputer 25 for a body is disposed in the body device. The controlling device is constituted, by combining these respective microcomputer. In this device, if a preliminary light emitting mode is selected at the blurring correcting control execution, and in the case the voltage of the power source battery is deficient, the preliminary light emitting or the blurring correcting control is prohibited, and thereby the lowering of the power source voltage derived from the power source consumption by simultaneously executing the preliminary light emission and the blurring correcting control, therefore abnormality of the blurring correcting control originated by simultaneously executing the preliminary light emission and the blurring correcting control is eliminated.</p> |
