By using a focal plane shutter having one set of shutter blades as a
shielding member of an image pick-up element, it is possible to
miniaturize the shutter compared to a focal plane shutter having two sets
of blades. This enables the operation to be simplified, and also saves
space. Furthermore, in an electronic camera having this focal plane
shutter, because the shooting lens side of the image pick-up element that
is disposed in the main camera body can be disposed protruding into the
shutter unit, the length of the main camera body in the direction of the
optical path of the shooting lens can be reduced, and it is possible to
form the main camera body small compared to a conventional main camera
body.