presented by :
LAVANYA K.S

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CAMERA
INDRODUCTION TO CAMERA
A camera is a device that records/stores images. These images may be still photographs or moving images such as videos or movies.
The term camera comes from the camera
obscura (Latin for "dark chamber"), an early mechanism for projecting images.
ABOUT CAMERA
 Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum.
 A camera generally consists of an enclosed hollow with an opening (aperture) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end.
HISTORY
 The first color photograph was made by Scottish physicist James Clerk Maxwell, with the help of English inventor and photographer Thomas Sutton,
in 1861.
 The electronic video camera tube was invented in the 1920s, starting a line of development that eventually resulted in digital cameras, which largely supplanted film cameras after the turn of the 21st Century.
The first permanent color photograph, taken by James Clerk Maxwell in 1861.
Image capture
Traditional cameras capture light onto photographic film or photographic plate. Video and digital cameras use an electronic image sensor, usually a charge coupled device (CCD) or a CMOS sensor to capture images which can be transferred or stored in a memory card or other storage inside the camera for later playback or processing.
19th century studio camera, with bellows for focusing
Focus
Due to the optical properties of photographic lenses, only objects within a limited range of distances from the camera will be reproduced clearly. The process of adjusting this range is known as changing the camera's focus.
There are various ways of focusing a camera accurately. The simplest cameras have fixed focus and use a small aperture and wide-angle lens to ensure that everything within a certain range of distance from the lens, usually around 3 metres (10 ft) to infinity, is in reasonable focus.
Auto-focus systems can capture a subject a variety of ways; here, the focus is on the person's image in the mirror.
Camera accessories
Accessories for cameras are mainly for care, protection, special effects and functions.
Lens hood: used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare.
Lens cover: covers and protects the lens during storage
Lens adapter: sometimes called a step-ring, adapts the lens to other size filters
Lens extension tubes allow close focus in macro photography
Flash equipment: including light diffuser, mount and stand, reflector, soft box, trigger and cord
Care and protection: including camera case and cover, maintenance tools, and screen protector
Large format cameras use special equipment which includes magnifier loupe, view finder, angle finder, focusing rail /truck.
Battery and charger