Can Anyone Explain Different Types Of Lenses And Also Explain How Camera Works?
A lens is made up of glass, plastic or some other transparent materials and is curved in shape. When light ray pass through a lens, the light ray change direction. A lens with a surface that curves is called concave lens. Cameras, projectors, telescopes, microscopes and spectacles all contain lenses, which bend the light that passes through them. We have two lenses in our bodies, one in each eye. The lens in a magnifying glass is a convex lens. A magnifying glass can be used to make small objects appear bigger. Light rays which pass through a lens form as image. What you see, reflected by a mirror s also called image. A camera works a bit like eye. Light enters the camera through a hole called focus aperture. The lenses in front of the aperture focus the light onto the film. Film is sensitive to light and records the image. Camera lens cannot focus easily as eye lenses. Lenses have to move backwards any forwards. Some cameras can do this automatically. On other, photographer turns the
