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How the picture is stored in memory
A television reproduces an image by scanning electron beams across its screen: first on every other line; then
returning to the top, in the remaining lines. Each of the two scannings from top to bottom is called a field. Together
they make up a frame.
The colour video printer records an image in the same way. If the subject moves quickly, the first field image and the
second field image differs slightly. When these two field images are overlapped in the frame setting, the frame image
will appear jittery on the monitor and blurred when printed.
In printing a full-size image, you can print without blur in the FIELD mode. in printing 1/4- or 1/16 size images, you
can print even a fast-moving subject without blur.
First scanning
Second scanning
(The subject has moved.)
cS
1/50 second
later
A field image (FIELD A
The other field image
Frame image (FRAM
or B)
(FIELD A or B)
ReAERAME)
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