| 摘要 |
PROBLEM TO BE SOLVED: To reduce the power consumption. SOLUTION: The evaluation value corresponding to the high-frequency component of the intensity signal caused by a slight shift of a focus lens in one direction and another direction is received, and the shift quantity (focus shift quantity) of the focus lens for focusing is calculated (ST1-ST4). The focus shift quantity of the present field is stored in a buffer in the non-wobbling field except during a zooming action, during low-speed shuttering, and when the focus position is not located near a focal position (ST5-ST7), and the focus shift quantity is set to 0. The sum of the shift quantity of the focus lens on wobbling (wobbling quantity), the present focus shift quantity, and the focus shift quantity of the previous field stored in the buffer is used as the focus lens shift quantity to control the shift of the focus lens in the wobbling field (ST9-ST14). The moving time of the focus lens is shortened, and power consumption is suppressed. |
