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Field
One half of a complete picture (or frame ) interval, containing all of the odd or even scanning lines of the picture.
Field Frequency
The rate at which a complete field is scanned, normally 50 times in Australia and 60 times per second in North America.
Field Sequence
A television frame , or picture, comprises two fields. Each successive frame of component 525 and 625 line television repeats a pattern and so can be edited to frame boundaries – like film editing.
Composite video, coded as PAL, NTSC or SECAM, carries colour information on a subcarrier whose cyclic pattern repeats over a longer period – 4 frames in PAL and 2 frames in NTSC or SECAM.
The National Film and Sound Archive of Australia acknowledges Australia’s Aboriginal and Torres Strait Islander peoples as the Traditional Custodians of the land on which we work and live and gives respect to their Elders both past and present.