A digital camera is a camera that takes video or still photographs, or both, digitally
by recording images on a light-sensitive sensor.
Many compact digital still cameras can record sound and moving video as well as still photographs.
In the Western market, digital cameras outsell their 35 mm film counterparts.
Digital cameras can include features that are not found in film cameras, such as
displaying an image on the camera's screen immediately after it is recorded, the
capacity to take thousands of images on a single small memory device, the ability
to record video with sound, the ability to edit images, and deletion of images allowing
re-use of the storage they occupied. Digital cameras are incorporated into many
devices ranging from PDAs and mobile phones (called camera phones) to vehicles.
The Hubble Space Telescope and other astronomical devices are essentially specialised digital cameras.
Compact cameras are designed to be small and portable; the smallest are described as subcompacts.
Compact cameras are usually designed to be easy to use, sacrificing advanced features and picture quality
for compactness and simplicity; images can only be stored using lossy JPEG compression. Most have
a built-in flash usually of low power, sufficient for nearby subjects. They may have limited
motion picture capability. Compacts often have capability, but if they have zoom capability
the range is usually less than for bridge and DSLR cameras. They have a greater depth of field,
allowing objects within a large range of distances from the camera to be in sharp focus.
They are particularly suitable for casual and "snapshot" use.
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