The viewfinder 20 may be preferably movable in two directions that are orthogonal to each other. Specifically, it may be preferable that the viewfinder 20 stretch out (protrude) from the containing position P1 (see FIGS. 1 to 3) to the upper side of the body 10 as illustrated by an arrow A1 in FIGS. 4 and 5, and then move backward of the body 10 (in an eyepiece direction) as illustrated by an arrow A2 in FIGS. 6 and 7 to arrive at the use position P2. By causing the viewfinder 20 to protrude to the upper side of the body 10, the use position P2 is positioned on the upper side of the body 10. Accordingly, the imaging unit 1 is allowed to have a configuration closer to a configuration of a general digital single-lens camera in which the viewfinder 20 is positioned on the upper side of a lens barrel, the display section 12, etc., which makes it possible to improve usability for the user. Also, by causing the viewfinder 20 to move backward of the body 10, it is possible to reduce a clearance to an eye, and to thereby improve light blocking characteristics.

Concerning an amount by which the viewfinder 20 moves backward of the body 10, an eyepiece surface 22A of the viewfinder 20 may preferably protrude more to the back compared to the rear surface 10B (the display section 12) of the body 10, for example. Accordingly, the clearance to an eye is reduced, and a nose of the user may be less likely to hit the display section 12, which improves usability.