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A three-CCD (3CCD) camera is a camera whose imaging system uses three separate charge-coupled devices (CCDs), each one receiving filtered red, green, or blue color ranges. Light coming in from the lens is split by a beam-splitter prism into three beams, which are then filtered to produce colored light in three color ranges or "bands". The system is employed by high quality still cameras, telecine systems, professional video cameras and some prosumer video cameras.
Compared to cameras with only one CCD, three-CCD cameras generally provide superior image quality by using full-frame dichroic filters to better separate the red, green and blue color bands, and better low-light performance. By separating red, green, and blue color ranges with a 1:1 pixel ratio, three-CCD cameras achieve much better precision than single-CCD cameras.[1]
In contrast, almost all single-CCD cameras use a Bayer filter, using less accurate dye filters in front of each pixel to separate the colors. Because each pixel on a single CCD sensor is covered with its own tiny color filter, a frame is necessary to keep the dye filters from leaking into adjacent pixels. The result is less light absorbed compared to a CCD without a Bayer filter. Typically there is a 2:1 ratio of green and red/blue pixels, producing less color detail.[2]
As of 2024, no commercial 3CCD camcorders are in production due to modern Bayer sensors having improved sensitivity, higher pixel count, and better color interpolation algorithms.
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See also[edit]
- Minolta RD-175 – An early DSLR camera that used three CCD sensors
- Thin-film optics
References[edit]
- ^ "3CCD Colour Advantages". Adept.net.au. Retrieved 11 April 2018.
- ^ Wootton, Cliff (2005). A Practical Guide to Video and Audio Compression: From Sprockets and Rasters to Macroblocks. Elsevier. p. 137. ISBN 978-0-240-80630-3.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction