Digital
Single-Lens
Reflex (DSLR) cameras have been
around for about 20 years or so,
one of the first commercially
available ones was Kodak DCS-100,
which was based
off of the earlier non-commercial
DSLR Nikon F3 camera system
(Aasland). They
work by focusing light rays
through a lens onto a mirror that
then reflects
them onto a CCD sensor, or
sensors, inside the camera body.
The duration and
amount of light let through is
controlled by the shutter and
aperture of the
camera. These light rays are then
absorbed by the CCD and then
turned into a
digital image that is then
formatted for display on various
devices.
Kodak's
first DSLR (ca 1991)
My modern Canon Rebel T3i
DSLR
Image Credit:
http://www.nikonweb.com/dcs100/
Image Credit: Self