1. An imaging apparatus comprising: an imaging portion that images an omnidirectional subject on the basis of an imaging position when imaging is performed and generates a circular image including the omnidirectional subject; an image processing portion that specifies a substantially fan-shaped object region in a circular image which is generated on the basis of a direction specified based on an attitude of an imaging apparatus in the imaging position among all directions and converts an image of the object region into a substantially rectangular image; and a display control portion that simultaneously displays a conversion image which is the converted image and the generated circular image on a display portion.