| 摘要 |
PURPOSE:To easily detect a focus by moving a lens for focusing to a specified position, zooming it to a wide side thereafter and detecting the focus in the case that the focus cannot be detected caused by low contrast scanning. CONSTITUTION:When a focus detection start switch is turned on, the focus is detected by a range-finding part 2. In the case that the focus cannot be detected as the result, the focus is repeatedly detected while a lens group for focusing (AF lens) LF is driven. Then, in the case that the focus cannot be detected further as the result and the focus detection start switch is continuously turned on, the lens group LF is moved to the specified position and the focus is repeatedly detected while the lens group LF is zoomed toward the wide side thereafter. When such a lens position that defocus quantity is not excessively large at least with respect to an object on a near side is set as the specified position, the focus is easily detected when it is repeatedly detected while the zooming is executed. |
