A binocular telescope with a photographing function includes a pair of telescopic
optical systems, a casing for receiving the telescopic optical systems, and the
casing has outer-side end portions. A camera system includes a photographing optical
system, and a solid-state image sensor arranged behind and aligned with the photographing
optical system, and an electronic control system electronically controls an operation
of the camera system. The electronic control system is supplied with electric power
from the batteries through an electric power source circuit board. The batteries
and the electric power source circuit board are provided at the outer-side end
portions of the casing, such that the weight is balanced between the outer-side
end portions of the casing.