| 摘要 |
PURPOSE:To prevent a clutching means from being stopped at a neutral position by inserting a torsion spring between a mode selecting means and a fixing member and pressing the torsion spring in the automatic focusing(AF) positional direction of the mode selecting means. CONSTITUTION:When a mode is changed over from a manual focusing(MF) mode state to an AF state, a button for releasing restraining 34 is depressed, and the restraining by a restraining member 32a is released to make a changeover switch into a rotatable state. Thus, even if an operator rotates the changeover switch by a minute angle, and his hand is released, since the pressing force of a component in the rotational direction of the changeover switch of the torsion spring 131, is not enough to rotate the changeover switch, the changeover switch is stopped. At this time, a clutch pin is left in an MF mode as it is, a focusing optical system is driven by an MF operation. Further, when the switch is rotated, the pressing force of the component in the rotational direction of the switch of the torsion spring 131 obtains sufficient strength, the switch is rotated in an AF mode direction, and the pin is made into the AF mode. |
