15 Ağustos 2007 Çarşamba

Digitall Cameras

Video cameras are classified as devices whose main purpose is to record moving images.
Professional 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.
Camcorders 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.
Webcams 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.
In addition, many Live-Preview Digital cameras have a "movie" mode, in which images are continuously acquired at a frame rate sufficient for video.A Live-Preview Digital camera (LPD) is a camera that uses a conventionally generated digital image (live-preview) on an electronic screen as its principal means of framing and previewing before taking the photograph. With the exception of very few live-preview DSLRs, any digital camera that has live-preview falls into this category.

Compact digital cameras
Also called digicams, this encompasses most digital cameras. They are characterized by great ease in operation and easy focusing; this design allows for limited motion picture capability. They tend to have significantly smaller zooms than prosumer and DSLR cameras. They have an extended depth of field. This allows objects at a larger range of depths to be in focus, which accounts for much of their ease of use. It is also part of the reason professional photographers find their images flat or artificial-looking. They excel in landscape photography and casual use. They typically save pictures in only the JPEG file format.
Bridge cameras
Prosumer or Bridge digital cameras form a general group of higher end LPDs that physically resemble DSLR cameras and share with these some advanced features but share with compacts the same basic LPD design. Traditionally DSLRs are considered much more professional than bridge cameras which have so far been prosumer or at best semi-professional. However since the introduction of the Canon EOS Digital Rebel (a small-sized, low-priced DSLR introduced in 2003) and what followed it of similar entry-level DSLRs from different manufacturers, a new class of DSLR has emerged and the distinction between bridge versus DSLR as prosumer versus professional cameras has become less black and white than it used to be. The new class of DSLRs can be described as consumer (compared to the higher classes of DSLRs), while the top bridge cameras remain prosumer (compared to compact LPDs). A Comparison between the bridge and entry-level DSLRs would reveal that they are on par. The name prosumer from professional (or producer) and consumer, means a professional-consumer or a producer-consumer (who is involved somehow in the production of the product that they consume).

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