A digital still camera includes a lens mount mechanism, positioned on a
front face of a camera body, for securing a lens assembly to the camera
body removably. A door shaped cover is secured to the camera body, and
shiftable between first and second positions while the lens assembly is
removed. The door shaped cover, when in the first position, is closed on
the front face to cover the lens mount mechanism, and when in the second
position, is open from the front face to allow loading of the lens
assembly and to operate as a grip. A flexible pad sheet of rubber is
deformable resiliently when the door shaped cover is retained in the
first position by a retaining mechanism, for tightly closing between the
front face and a cover inner surface of the door shaped cover opposed to
the front face.