Digital Camera

By: Subhash

A digital camera is an electronic device used to capture and store photographs electronically instead of using photographic film like conventional cameras. Modern compact digital cameras are typically multifunctional, with some devices capable of recording sound and/or video as well as photographs. Professional digital cameras are generally dedicated to photography. In the Western market, both types of digital cameras now outsell their 35 mm film counterparts.

Digital cameras can be classified into several categories:

&bullProfessional video cameras such as those used in television and movie production. These typically have multiple image sensors (one per color) to enhance resolution and color gamut. Professional video cameras usually do not have a built-in VCR or microphone.

&bullCamcorders used by amateurs. They generally include a microphone to record sound, and feature a small liquid crystal display to watch the video during taping and playback.

&bullWebcams are digital cameras attached to computers, used for video conferencing or other purposes. Webcams can capture full-motion video as well, and some models include microphones or zoom ability.

Features:

&bullResolution: The resolution of a digital camera is determined by the camera sensor that turns light into digital information, replacing the job of film in traditional photography. The sensor is made up of millions of "buckets" that collect light. Generally, these buckets college only a narrow range of light due to a color filter.

&bullStorage Media: There are several types of flash memory cards used for "digital film," but no matter which type the camera uses, the one that comes with the camera is typically undersized. Plan on purchasing a larger one when you buy the camera (see flash memory).

&bullData Transfer: Digital cameras come with a USB cable for transfer directly to the computer, and many computers come with one or more memory card slots. Printers may also come with card slots, allowing you to print your photos without using the computer at all. Wireless (Wi-Fi) transmission is also available on some cameras.

&bullBattery Duration: Digital cameras use either rechargeable or standard AA batteries. It can take an hour or more to recharge a battery, so an extra one, fully charged, is always a good idea to have along. AA batteries can be purchased almost anywhere, and rechargeable AA batteries can also be used.

&bullVideo Capture: Most digital cameras now have a video capture facility (although SRLs don't), meaning you can create short film sequences. The quality isn't always very good (mainly dependent on the mega pixel sensors) some cameras don't have a sound recorder. But it's still handy to capture good moments on video.

The ease of use: You have to get used to a new gadget - finding out what all the buttons are for and getting used to the menus all requires a bit of practice. Testing the camera and it's functionalities out before buying it can be useful to check if you like it's look and feel.

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