depth of focus


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depth of focus

n
(Photography) the amount by which the distance between the camera lens and the film can be altered without the resulting image appearing blurred. Compare depth of field
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Currently, the only EDOF IOL available in the United States is the Tecnis Symfony extended depth of focus IOL (Johnson & Johnson Vision, NJ) [5, 6], which is available in a standard version as well as toric versions.
Users can further expand capability by adding the modular SPOT Advanced software, which provides tools for fluorescence imaging and database archival, and supports modules for intensity display scaling, extended depth of focus processing, peripheral device control and live image overlays.
The second chapter instructs on technique such as use of aperture, shutter speed, depth of focus, and composition.
Most of these near field applications demand subwavelength beam with a large depth of focus (DOF) and high resolution.
The near vision is greatly dependent on depth of focus and depth of field with a reactive pupil.
For most optical imaging systems, research is focused on getting better resolution in all three dimensions, which means that the transverse super resolution is necessary as well as a good depth of focus (i.e., good resolution along the optical axis).
They review demographics, clinical aspects, depth of focus of the eye, and the youthful accommodation system and its performance, then the effect of aging on accommodation, general optical characteristics, and neural performance.
Its combination of chiaroscuro, depth of focus, oblique camera angles, a disjointed and fragmented narrative, all supporting an appropriately gloomy world view, initiated the style.
The technology captures a total of six images of a single 3D object -- three with flashes from different angles, and three in ambient light conditions with different exposure levels -- then combines them into a single high-resolution 3D-like image, either as a copy or as an electronic image file with incredible depth of focus. The six images captured are combined into one 2D image using an algorithm which removes shadows.
* An expanded working distance, greater depth of focus, and brighter, yet safer, illumination.
The 80 mm lens provides a 116-micron (0.005") spot size with a 0.8 mm (0.032") depth of focus.
Designed for demanding production environments, the Datalogic Matrix 400 imagers have a wide depth of focus which means they can capture bar codes of different-sized bottles and cover a much wider range of movement than is possible using linear scanners.