zoom

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zoom

(zūm),
The action of a varifocal lens system in a camera or microscope that maintains an object in focus while approaching it or receding from it; this effect may be obtained by moving two or more of the lens components at rates bearing a linear relation to one another.
Farlex Partner Medical Dictionary © Farlex 2012

zoom

(zoom)
To magnify (“zoom in”) or shrink (“zoom out”) an image in order to highlight some of its smaller features or some of the environment in which the imaged object is situated.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
It supports quadband GSM and WCDMA 900/2100 technology and comes with a 2-megapixel camera and 4X digital zoom, flash and panorama mode.
Megapixel resolution cameras and digital zoom capability can help better enhance the detail of interest in a wide field of view scene, from a person to a license plate.
TARGET: A weekly circular for Westchester County, N.Y., good from October 27 to November 5, offered a Kodak 4-megapixel digital camera with 5x digital zoom for $129.99, down from $139.99.
Up to about 11x zooming is possible when 2.8x optical and 4x digital zoom capabilities are combined.
The Hi Vision 8500 Premium Ultrasound System contains a software upgrade that includes one-touch optimization, a new digital zoom with increased resolution and selectable sector size for maximizing the frame rate, and a DVD-RW storage capability.
PalmSource also said that the Xplore M28 has a built-in VGA camera with digital zoom, MP3 and MPEG4 support, 64 MB RAM/32MB SDRAM Flash Internal Memory Card, high quality colour 2.2 inch D-TFD 65K colours LCD screen, SMS/MMS/WAP/e-mail/Java support and up to 1GB of memory capacity with Secure Digital (SD)/Multimedia Card (MMC).
In the spring, Tamrac launched its Digital Zoom SLR camera bag.
The highly integrated OV5610, which includes an on-chip 10-bit A/D converter, can perform continuous digital zoom and in VGA resolution is capable of operating at 30 frames per second (fps), making it the ideal candidate for low-cost digital camcorders and hybrid cameras, which combine real digital video and still images in one device.
The metallic silver Foxz2 is 9.8mm thin and features a 1.5-inch color TFT LCD screen, built-in flash, and 2x digital zoom. The cameras also feature 8MB of internal flash memory, and the SD card slot allows for expanded memory.
The camera is a 310,000-pixel CMOS image sensor with adjustable white balance (on a PDA!) and has a 2-times digital zoom. These things are great, aren't they?
Sony gives you 2x digital zoom (unfortunately, there's no true optical zoom), a way to manually adjust the exposure, red-eye reduction, and a timer to delay pictures.
Excellent image quality is supplied by its 4.13 megapixel total resolution, and its 56x total zoom - 8x optical plus 7x digital zoom allows photographers to get closer to the action.

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