Preferable optical performance is ensured to improve image quality.
The present technology includes: a housing having a mount part to which at least a first accessory and a second accessory are selectively attached; and an imaging element that photoelectrically converts captured light into an electrical signal, in which the mount part is formed with a first mount surface to which the first accessory is attached, and a second mount surface to which the second accessory is attached, and the first mount surface and the second mount surface are located on the same plane. Therefore, since the first accessory and the second accessory are selectively attached to the first mount surface and the second mount surface, which are located on the same plane, it is possible to ensure preferable optical performance and improve image quality.