A digital still camera includes a lens unit and a camera body. The lens
unit has a photographing lens, and a CCD for image pickup by detecting
object light from the photographing lens. The camera body has a lens
mount portion adapted to loading of the lens unit, and a camera contact
for electrical connection with the lens unit. The lens unit has a lens
unit coupling portion, engageable with the lens mount portion, for
removable loading on the camera body. A lens connection contact touches
the camera contact when the lens mount portion is engaged with the lens
unit coupling portion, for electrical connection. A circuit board is
connected with the CCD, has a first surface opposed to the camera body.
The lens connection contact is mounted on the first surface. In preferred
embodiment, a bayonet mechanism couples the lens unit coupling portion
with the lens mount portion.