An image pickup apparatus includes a lens as an image pickup optical system having
a zooming function, an X-Y address type image pickup device in which a reading
position in a two-dimensionally arranged pixels is designated by a combination
of an X address and a Y address, an image pickup device driver which performs electronic
zooming by changing an address range which is a combination of a range designated
by the X address and a range designated by the Y address, and a digital processor
which provides a substantially wider zoom range by controlling the electronic zooming
and optical zooming in combination than by controlling one of the electronic zooming
and the optical zooming.