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.
Originally, photographs were produced by allowing light focused from a lens to strike a cellulose film coated with chemicals. These chemicals reacted with the light to reproduce the scene in front of the lens which was then held on the film until it was processed. The film would then be passed through several chemical baths which would reveal the photograph and fix it permanently 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.
It follows then, that some sort of removable memory devices are needed, and there are several types available on the market ranging through SD, Memory Stick, Compact Flash and a few lesser known types. The latest range of cards are able to support a large number of photographs compared to the first memory cards available on early cameras.
Apart from the camera, no digital photographic process would be able to function without a computer. The computer enables the photos to be downloaded from the camera onto larger memory devices such as hard disk drives. Using a computer, the photograph can be manipulated to enhance sharpness, color tone and even to remove and add items that were not present in the original image.
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.
Originally, photographs were produced by allowing light focused from a lens to strike a cellulose film coated with chemicals. These chemicals reacted with the light to reproduce the scene in front of the lens which was then held on the film until it was processed. The film would then be passed through several chemical baths which would reveal the photograph and fix it permanently 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.
It follows then, that some sort of removable memory devices are needed, and there are several types available on the market ranging through SD, Memory Stick, Compact Flash and a few lesser known types. The latest range of cards are able to support a large number of photographs compared to the first memory cards available on early cameras.
Apart from the camera, no digital photographic process would be able to function without a computer. The computer enables the photos to be downloaded from the camera onto larger memory devices such as hard disk drives. Using a computer, the photograph can be manipulated to enhance sharpness, color tone and even to remove and add items that were not present in the original image.
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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A great digital camera for a low price can be hard to come by. One of the best ways to find a name brand, high quality digital camera, like the Canon digital camera, can be by searching online.
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