Today's facial-recognition systems use a camera to zoom in on an individual's eyes, mouth and nose, and extract a "feature vector, " a set of numbers that describes key aspects of the image, such as the precise distance between the eyes. (Remember, in the end, digital images are just numbers.) Those numbers can be fed back into a large database of faces in search of a match.
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If they wanted to make Superman appear to be flying, they would film Reeve against blue screens and zoom the camera in and out around him to simulate the actor in motion.
Reeve's Superman soared thanks to a combination of traditional wirework, optical processing and the synchronising of zoom lenses in camera and projector.
The new flagship camera in the WB long-zoom series makes it easy for users to achieve excellent quality pictures from a camera that is stylish and classic in design.
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The idea is that it gives much better quality shots when you zoom in compared to a normal camera phone, which matters because there is no room for a big zoom lens on a typical mobile.
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This ultra-zoom camera comes with built-in GPS capabilities as well, allowing photographers to log their journey with an easy-to-use display.
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Using voice commands, the user can order the device to open files, check emails or zoom in with the camera to look in closer detail at what's in front of them.
The film is famous for a camera trick Hitchcock invented to represent Scotty's vertigo - a simultaneous zoom-in and pull-back of the camera that creates a disorientating depth of field.
They will be able to zoom in and out, virtually steer the camera from side to side, rewind, and fast forward as they check out areas and things of interest on Earth.
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The typical camera is a Samsung color CCD model with a power zoom lens in a weather-resistant housing.
The 2x optical zoom is equivalent to a 32mm-64mm lens on a standard 35mm camera, and a 3x digital zoom will help the shutterbug zero in on faraway details.
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The PowerShot SX260 HS camera puts Canon's amazing optical reach into a pocket sized camera, with a 20x optical zoom (25mm to 500mm) letting you pull subjects in close.
The lens retraction and extension is faster using the Zoom Framing Assist button than the zoom lever, and allows the photographer to keep the camera more stable for the shot, this is particularly helpful for those trying to zoom in and shoot pictures of animals or moving subjects.
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The PowerShot A85 - Their new four megapixel replacement for the A70 (which was the best-selling digital camera in the US last year), the A85 has a 3.2x optical zoom lens and a 1.8-inch LCD screen.
Similarly, if the camera were used to take video images of a tennis match, say, the viewer could zoom in on a player, or on someone at the far end of the stadium, and see both images with equal clarity.
The Galaxy Camera also has a 21x Super Long Zoom lens, quad-core processor, and excellent battery life in its corner.
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The Pre Rec (retro cache) feature continuously records and stores up to five seconds of footage in cache memory to help prevent missed shots of breaking news, while a second trigger and servo zoom control on the built-in handle makes it easy to record while holding the camera at low or high angles.
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The GALAXY Camera's 21x optical zoom can be controlled by either button or touchscreen, rendering long-distance pictures in a quality that users will be proud to share, while OIS ensures that images stay clear and crisp.
The Coolpix 4800 has a resolution of "only" four megapixels, but they do toss in an 8.3x optical zoom lens (it's actually the smallest digital camera with that much optical zoom), which is nice since once most consumers realize they don't need more than four or five megapixels stuff like optical zoom and lens quality is going to be become a bigger and bigger deal.
The GALAXY Camera, boasting a 21x super long zoom lens and a super-bright 16M BSI CMOS sensor, delivers pictures in brilliant quality.
In addition to the camera, the 11- 27.5mm lens is a super-compact zoom lens that offers a helpful 2.5x zoom range in an easily pocketable size.
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Creative Labs, a digital camera maker, now also bundles motion-detection features into its software, letting a PC control multiple cameras and zoom in on a suspect's face.
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