1. An imaging apparatus comprising: an optical system; an imaging unit that captures a subject image which is input via the optical system and generates an image signal; an image processor that performs predetermined processing on the image signal generated by the imaging unit and generates image data; a display unit that displays an image represented by the image data; and a control unit that controls the image processor and the display unit, wherein the control unit records moving image data and generates, from all or a part of a plurality of frame images composing recorded moving image data, a still image based on user's specifying of an image or an area of the image, and the display unit displays one frame image among the plurality of frame images composing the recorded moving image data, as a setting image for the user to specify an image or an area of the image, and adds highlighting to an in-focus portion in the setting image.