DIGITAL PHOTOGRAPHY FOR U.

SINCE last 10 yeqrs the photography has come under a great change from its inception. the films have turned into DIGITAL sensor, who took the responsibility of photographing images in place of films.. thus DIGITAL CAMERAS came into being. they are little computers that can photograph pix. they are packed-full of computer memory, microchips,micro-processors and a CCD image sensor chip. this camera contains a charge- coupled device(CCD) on which the image is captured. software inside the camera looks at the image three times - ones each for RED,GREEN,& BLUE then combines and presents the complete RGB picture on the screen. CCD is similar to film in a conventional camera. the CCD is used to capture the digital pictures,and pictures are usually stored in Erasable, Programmable Memory microchips.
DIGITAL CAMERAS HAVE SPEED RATINGS THAT ARE SIMILAR in concept to film speed. some cameras operate at a fixed speed and others offer flexibility in speeds to match changing conditions.