Of the digital photography equipment available on the market today, the digital camera has to be the most important single item for producing eye catching images. There has been a vast improvement in quality since the introduction of the first commercial digital cameras in the late nineteen eighties. This development radically changed the way images were captured and stored.
Traditionally, photographs were taken by exposing a chemically coated cellulose film to light inside a closed box. The short burst of light from the lens reacted with the chemicals on the film to produce an image of the scene in front of the camera. This film was then removed from the camera and underwent several chemical processes to define the image and to fix it on the film.
The digital camera emulates this process electronically without the need for chemicals and in a much shorter time. It does this by employing arrays of sensors that are sensitive to light upon which is focused the light from the camera lens in much the same way as in a normal camera, the sensors replacing film in this case. The image is then stored on a memory device to be reproduced via a printer or on a computer monitor at a later stage.
This means that the camera needs a type of removable memory of which there are a number of formats available including Memory Stick, SD card, Compact Flash and others not so well known. Some of these cards can support huge numbers of pictures, unlike the early versions that were supplied with the first digital cameras.
In addition to the camera, a computer is a necessary component for reproducing photographs for digital processing. A computer is able to facilitate the downloading of the digital images onto the local hard drive. The photograph may then be digitally enhanced by improving the colors, altering the sharpness and even to insert or remove portions of the image not originally in the picture.
The lenses on many digital cameras may be interchanged with wide angle and telephoto types in much the same way as film cameras. There are some differences between film and digital cameras, but both require a tripod for blur free photographs. This concludes the beginners introduction to digital photography equipment.
Traditionally, photographs were taken by exposing a chemically coated cellulose film to light inside a closed box. The short burst of light from the lens reacted with the chemicals on the film to produce an image of the scene in front of the camera. This film was then removed from the camera and underwent several chemical processes to define the image and to fix it on the film.
The digital camera emulates this process electronically without the need for chemicals and in a much shorter time. It does this by employing arrays of sensors that are sensitive to light upon which is focused the light from the camera lens in much the same way as in a normal camera, the sensors replacing film in this case. The image is then stored on a memory device to be reproduced via a printer or on a computer monitor at a later stage.
This means that the camera needs a type of removable memory of which there are a number of formats available including Memory Stick, SD card, Compact Flash and others not so well known. Some of these cards can support huge numbers of pictures, unlike the early versions that were supplied with the first digital cameras.
In addition to the camera, a computer is a necessary component for reproducing photographs for digital processing. A computer is able to facilitate the downloading of the digital images onto the local hard drive. The photograph may then be digitally enhanced by improving the colors, altering the sharpness and even to insert or remove portions of the image not originally in the picture.
The lenses on many digital cameras may be interchanged with wide angle and telephoto types in much the same way as film cameras. There are some differences between film and digital cameras, but both require a tripod for blur free photographs. This concludes the beginners introduction to digital photography equipment.
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