To acquire as much information on lenses as possible and utilize the information.

A digital camera 20 acquires a lens image as an appearance image of a lens barrel on which setting values changing in photographing are displayed, analyzes the lens image, recognizes indices and numbers included in the lens image by image recognition, acquires numbers indicated by the indices as the setting values, and displays and outputs the acquired setting values. The setting values include at least one of the F-value of lenses, a range finder value, and a focal length. Thus, for example, even when a lens barrel having no electronic contact point is mounted, lens information can be acquired from an appearance image.