Image stabilizing apparatus, optical apparatus having the same, and image stabilizing method

An optical apparatus comprising:

• an image stabilizing apparatus;
• and
• a corrector configured to correct an image blur caused by a shake,
• wherein the image stabilizing apparatus includes at least one processor or circuit configured to execute a plurality of tasks including:
• a first calculation task configured to make a calculation using an output signal from a shake detector configured to detect the shake;
• a second calculation task configured to estimate an estimated value corresponding to an offset variation value included in the output signal from the shake detector by using a signal processed by a low-pass filter having a high-frequency attenuation characteristic steeper than a high-frequency attenuation characteristic of the first calculation task;
• and
• a correction task configured to drive a corrector configured to correct an image blur caused by the shake using a calculation result of the first calculation task and the estimated value.

An image stabilizing method comprising the steps of:

• making a calculation using an output signal from a shake detector configured to detect a shake;
• estimating an estimated value corresponding to an offset variation value included in the output signal from the shake detector by using a signal processed by a low-pass filter having a high-frequency attenuation characteristic steeper than a high-frequency attenuation characteristic of the making step;
• and
• driving a corrector configured to correct an image blur caused by the shake using a calculation result of the making step and the estimated value.