Composite low frequency cutoff filter and imaging apparatus using the same

An imaging apparatus having a camera shake correction function, the imaging apparatus comprising:

• an optical system;
• a shake correction member operable to move in a plane perpendicular to an optical axis of the optical system to perform a camera shake correction;
• a movement detector operable to detect movement of the imaging apparatus;
• a composite low frequency cutoff filter operable to receive an output of the movement detector;
• and
• a controller operable to drive the shake correction member based on an output of the composite low frequency cutoff filter,
• wherein the composite low frequency cutoff filter includes a first low frequency cutoff filter, a second low frequency cutoff filter, and an adder-subtractor,
• the second low frequency cutoff filter receives an output of the first low frequency cutoff filter,
• the adder-subtractor subtracts an output of the second low frequency cutoff filter from an input to the composite low frequency cutoff filter, and outputs a result of the subtraction to the first low frequency cutoff filter, and
• an output of the first low frequency cutoff filter is outputted as an output of the composite low frequency cutoff filter.