optical zoom

(redirected from optical zoom range)

optical zoom

Changing the focal length of a camera by adjusting the physical zoom lens. All zoom lenses in film cameras and digital single lens reflex (DSLR) cameras are optical zoom. Digital point-and-shoot cameras as well as consumer and prosumer video camcorders have optical zoom, but they also have digital zoom.

Digital Is Software Zoom
At the telephoto side of the camera, the computer takes over and interpolates the results. For example, a still camera may have 3x optical zoom in the lens, but can process the image with its internal computer to 10x. Depending on the camera and subject matter, the software-created digital zoom can be quite acceptable or mediocre.

The Higher the Optical, the Better
The higher the optical zoom, the better the results. In a still camera, an optical zoom of 10x or more is called a "superzoom" lens. Note that if a still camera is advertised with "10x zoom," that does not necessarily mean optical zoom only. In many cases, the optical is 3x with the additional 7x being digital.

With camcorders, the optical zoom typically ranges from 10x to 64x, while the digital zoom can go from 100x to 1000x. See digital camera.
References in periodicals archive ?
It offers a 4K L-series quality lens which has a 15x optical zoom range, a maximum aperture of f/2.8, a wide angle of 25.5mm and effective IS to ensure maximum control for stable 4K UHD footage.
The Nikon Coolpix P900 has a massive, 83x optical zoom range. It has the same sensor as the Nikon P610, coupled with stereo audio channels, and DSLR-esque build and controls.
Merging Canon's first class optics, a versatile 25x optical zoom range, and DSLRA[degrees]levels of manual control, the PowerShot G3 X allows the freeA[degrees]dom to get closer to subjects, explore and shoot on the move.
Sony Middle East and Africa has unveiled the new Cyber-shot H400 with a 63x optical zoom range.
L820 features optical zoom of 30x and has a 16-megapixel sensor and L320 packs optical zoom range of 26x and it has a 16.1-megapixel sensor while L28 and L27 come with optical zoom of 5x.
for optimum performance throughout the 50x optical zoom range. A newly designed
Turning the turret allows the operator to access each objective lens and an optical zoom range of over 70x the minimum magnification.
A 5x optical zoom range and 28mm wide angle lens broaden shooting possibilities and detailed close-ups are as easy to capture as group shots thanks to Enhanced Face Detection and Smile Shutter.
Bosch Security Systems of Fairport, New York, has extended the optical zoom range of its AutoDome cameras to 26X magnification.
Sony Middle East and Africa unveiled the new CyberA[degrees]shot H400 with a 63x optical zoom range, the highest ever in a compact digital camera, last week.