Imaging apparatus

An imaging apparatus comprising:

• an imaging optical system that has a variable power lens capable of changing a focal distance by moving along an optical axis direction, has a focus lens capable of adjusting a focal point by moving along the optical axis direction, and forms a subject image by the variable power lens and the focus lens;
• an imaging element that generates image data via the imaging optical system;
• a movable frame that holds the focus lens and is movable back and forth along an optical axis of the imaging optical system;
• a first driving unit that causes the movable frame to move by a specified distance toward an in-focus position along the optical axis direction to adjust the focal point of the imaging optical system;
• a zoom position detection unit that detects a zoom position of the variable power lens on the optical axis;
• a focus sensitivity determination unit that, based on the zoom position detected by the zoom position detection unit, determines whether a focus sensitivity indicating a ratio of a change amount of the in-focus position to a movement amount of the focus lens is equal to or smaller than a specified value;
• and
• a driving controller that drives the first driving unit to move the movable frame to the in-focus position if the focus sensitivity determination unit determines that the focus sensitivity is larger than the specified value.