The observation device includes: an optical unit on which an intermediate
image of an object to be observed is formed; a display unit that displays
an image of a subject to be photographed; and a display unit moving unit
that causes the display unit to be inserted in and removed from an
optical light path for observing the object without moving the optical
unit. Also, the camera includes: a finder optical system and an
image-capturing unit that captures an image of a subject. The finder
optical system includes an eyepiece unit; a focal plane plate on which an
intermediate image of an image of a photographic subject is formed; a
display unit that emits light; and a display unit moving unit that causes
the display unit to be inserted in and removed from a light path in a
position closer to the eyepiece unit than the focal plane plate.