Digital Photography (contd.)
The big difference between traditional film cameras and digital
cameras is how they capture the image.
Instead of film, digital cameras use a solid-state device called
an image sensor, usually a charge-couple device (CCD).
On the surface of each of these fingernail-sized silicon chips is
a grid containing hundreds of thousands or
millions of photosensitive diodes called
photosites, photoelements, or pixels.
Each photosite captures a single pixel in
the photo-graph to be.
An image sensor sits against a background
enlargement of its square pixels, each capable of
capturing one pixel in the final image