FIG. 16 illustrates an example of arch-like menu display that is displayed when the control ring 19 is operated. The display control section 103 may perform, for example, arch-like menu display as illustrated in FIG. 16 when the control ring 19 is operated. The display example illustrated in FIG. 16 shows an example in which numerical values of ?3, ?2, ?1, 0, 1, 2, and so on are simply displayed as the arch-like menu display 92. However, information related to the F-number, the zooming magnification, etc. may be displayed in an arch-like form instead of the numerical values. Also, various menu icons may be displayed. A content of a function assigned to the control ring 19 may be changed by another operation section 105. Further, for example, in a case where zooming magnification is assigned to the control ring 19, zooming with the use of the imaging lens 111 may be achieved by allowing the lens driving section 113 to operate in accordance with the operation of the control ring 19.