الثلاثاء، 11 يونيو 2013

Digital Camera

What is a digital camera



A camera that stores images digitally rather than recording them on film. Once a picture has been taken, it can be downloaded to a computer system, and then manipulated with a graphics program and printed. Unlike film photographs, which have an almost infinite resolution, digital photos are limited by the amount of memory in the camera, the optical resolution of the digitizing mechanism, and, finally, by the resolution of the final output device. Even the best digital cameras connected to the best printers cannot produce film-quality photos. However, if the final output device is a laser printer, it doesn't really matter whether you take a real photo and then scan it, or take a digital photo. In both cases, the image must eventually be reduced to the resolution of the printer.
The big advantage of digital cameras is that making photos is both inexpensive and fast because there is no film processing. Interestingly, one of the biggest boosters of digital photography is Kodak, the largest producer of film. Kodak developed the Kodak PhotoCD format, which has become the de facto standard for storing digital photographs.
Most digital cameras use CCDs to capture images, though some of the newer less expensive cameras use CMOS chips instead.

Advantages of digital camera


* Ease of use. Digital cameras, even some of the best on the market, are designed to be very user friendly. Most are point and shoot, but there are many options for those who like to choose their own settings, change lenses and more. Plus there are even online processing services, so there's no need to head out to get prints. They can be mailed right to your door.

* No film. The LCD readouts on most digital cameras coupled with the elimination of film make these wonderful for shooters who want to see their pictures and choose them before they're printed.

* Economical. Since the photos on digital cameras can be carefully chosen in advance of printing, the costs can be much less. Plus, there's no film to buy.

* Quality. Depending on the camera purchased and the accuracy of the settings, the quality can rival and sometimes even surpass a regular 35mm camera.