March 2009
Intermediate to advanced
320 pages
7h 57m
English
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CHAPTER 12
Line Standards and Definition
There are two main structural standards for High Definition (HD), one based on a pixel layout of 1920 × 1080 pixels and the other of 1280 × 720 pixels. In addition to the number of pixels there are other factors that contribute to the perceived quality of the picture; these include the choice between the image being scanned in an interlace or progressive manner and, if it is scanned in interlace, a factor best described as line summation that can affect that perceived picture quality. While both the standards can support up to 60 frames per second (fps) it is more common, with professional cameras, to find a 1080 camera limited to 30 fps with several 720 cameras going up to 60 fps.
The 1080 format has ...
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