Posts : 12
Join date : 2011-04-04
|Subject: How the camera work Mon Apr 04, 2011 8:53 pm|| |
The camera has a lightproof box in it, this allows a small amount of light to come in at the right time. Once the light goes in the camera it forms an image which causes a chemical reaction. One kind of camera is called a single-lens reflex (SLR) camera. First, light bouncing off the picture passes into the camera, through a set of lenses, and onto a mirror. From there, the light bounces up and into the pentaprism. Once light enters the pentaprism, it bounces around in a complicated way until it passes through the eyepiece and enters your eye. The flash on a camera is to light up a scene thats too dim to show up on film. Flash bulbs could only be used for a single flash, because they burn magnesium. The magnesium burned with a brilliant white light, made even whiter by a bluish filter that covered the glass around the bulb. Modern flash cameras use a very strong electric current from a battery. The current moves through ionized xenon gas, causing the gas to glow white.
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