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Wikipedia about iSight
for: iSight GPS
iSight was a webcam developed and marketed by Apple Inc. The iSight was sold retail for US$149 as an external unit which connects to a computer via FireWire cable and comes with a set of mounts to place it atop any current Apple display, laptop computer, or all-in-one desktop computer. The term is also used to refer to the camera built into Apple's iMac, MacBook, MacBook Air and MacBook Pro computers.
Apple introduced iSight at the 2003 Worldwide Developers Conference, intended to be used with iChat AV, Apple's video-conferencing client. iMovie (version 4 and later) can also be used to capture video from the device. In April 2005, Apple released a firmware update for the iSight to improve audio performance. As of December 16, 2006, the iSight was no longer for sale in the Apple online store or in retail locations.
Design
The iSight's ¼-inch color CCD sensor has 640480-pixel VGA resolution with a custom-designed three-part F/2.8 lens with two aspherical elements. It features autoexposure, autofocusing from 50 mm to infinity, and video capture at 30 frames per second in 24-bit color with a variety of shutter speeds. However, the iSight has an image delay of approximately 78 ms. The iSight incorporates internal microphones with dual-element noise suppression. The actual camera only takes up one-quarter of the unit; the remaining space is primarily occupied by its two microphones and mounting socket.
The iSight camera weighs 2.3 ounces (63.8 grams). It uses a single FireWire 400 (IEEE 1394a) cable (included) for audio, video, and power. The camera runs hot even when inactive. Four camera mounts, a plastic tube carrying case, and a FireWire camera mount adapter are also included. The user can select the mounting bracket most appropriate for their monitor or other mounting surface. It is fully compatible with its native Mac OS X as well as partially compatible with the Microsoft Windows and Linux operating systems.
The iSight has a small green LED that illuminates when the camera is in use. It also has an iris that closes by twisting the front of the camera.
Built-in iSight

External iSight
Windows XP and Vista will autodetect an external iSight camera as “1394 Desktop Video Camera”, but no specific iSight driver exists for Windows. Nevertheless, most Instant messaging clients are capable of using video from the camera and adjusting brightness and other settings (the image will appear to be overexposed until the settings are altered). Windows is not capable of receiving audio from iSight's internal microphones, as no Windows driver exists.
Technology blog Gizmodo reported in July 2006 that a bounty was offered for a driver that would enable the external iSight's microphone to function on Windows XP. Users were asked to contribute funds that were to be won by the successful developer. The driver's source would then be open to the public for porting to future Windows versions. After waiting 5 months with no submissions, Gizmodo canceled the competition, returned all donations, sold the iSight and bought a MacBook Pro.
























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