| 摘要 |
A previous displacement of the optical axis along a horizontal axis (or a vertical axis) detected at a previous performance of the frequency judging routine and a present displacement of the optical axis detected at a present performance are compared. It is judged whether a focused image tremble successively faces toward one direction or the direction of the tremble is reversed, based on combination of the result of the comparison and a previous direction of the focused image tremble. If the direction is reversed, and the focused image tremble is not caused by a hand tremble, the correction of the focused image tremble is stopped. It is judged that the focused image tremble is not caused by the hand tremble, when an elapsed time from a previous reverse of the focused image tremble to a present reverse of the focused image tremble is less than 25 milliseconds, and the amplitude of the focused image tremble is larger than a threshold value.
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