Imaging apparatus and camera body

A camera body to which an interchangeable lens is mountable, the interchangeable lens including an optical system operable to change a focus state of an image of a subject and a manual focus changing unit operable to be operated manually by a user to change the focus state of the optical system, the camera body comprising:

• an imaging unit operable to capture the image of the subject formed by the optical system and generate image data;
• an auto focus controller operable to control the optical system to focus on a partial area in the image indicated by the image data generated by the imaging unit;
• a display unit operable to display the image based on the image data generated by the imaging unit;
• and
• a display controller operable to control the display unit;
• wherein when detecting that the manual focus changing unit is operated by the user while a focus state is maintained after the autofocus controller controls the optical system to the focus state, the display controller determines, as an enlarged area, an area including a partial area in the focused image by the autofocus controller and controls the display unit to display the image of the determined enlarged area.