Archive for photographic film
Today digital cameras have become an essential part of life. People use them at parties, weddings and other events to capture every important moment. They have the advantage that a photographic film is not required and images can be viewed instantly. However they have several features in common with the 35mm film type cameras. Both have a lens, an aperture and a shutter.
The lens focuses light to expose an image on a silicon chip, instead of a film. The aperture controls the amount of light that enters the camera and the shutter controls the length of time for which the light enters.
What Are Megapixels of a Digital Camera?
The number of megapixels is important for the quality of the pictures taken as it determines how much the picture can be enlarged. However, it is not the only factor to be considered when buying a camera. A 2 megapixel image can produce a good 5 by 7 print; a 3 megapixel, an 8 by 10 and a 4megapixel, 11 by 17. Manufacturers often print the megapixel number on the front casing, as it is the first thing buyers look for.
The High End Models
The more expensive digital cameras have advanced features and higher resolutions therefore they allow the photographer to be more creative. They have through the lens focusing, exposure control, shutter speed control and the ability to take multiple pictures rapidly in successive order. Such models appeal to the more serious photographers.