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Data in a RAW-file is structured according to the Bayer filter's pattern in cameras that use a single image sensor. Debayering, the process of obtaining bitmap data from a RAW-image is always a lossy operation. [citation needed] In addition, some downsampling is always performed, again reducing image information.
Thus, a representation that compresses the storage size of a file from 10 MB to 2 MB yields a space saving of 1 - 2/10 = 0.8, often notated as a percentage, 80%. For signals of indefinite size, such as streaming audio and video, the compression ratio is defined in terms of uncompressed and compressed data rates instead of data sizes:
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The 200 mm f / 2.0, introduced in April 2008, comes as a successor for the above discontinued 200 mm f / 1.8. It is a large off-white lens with a rear drop-in filter tray and Image Stabilization. The 200 mm f / 2.8 lens is an inexpensive long prime. The first model, introduced in December 1991, had a built-in hood.
The 5 rupiah aluminium coin was revised dated 1974, the obverse changing only the date, but the reverse depicting the logo of KB ('Keluarga Berencana', aka family planning', a movement first established by the Indonesian government in 1970), i.e. a 2-parent, 2-child family with rice and cotton stalk and letters KB, with the text 'KELUARGA ...