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===Sony's "Frame shutter mode"===
"Frame shutter mode" or "progressive shutter mode" is [[Sony]]'s [[trademark]]ed [[progressive scan]] [[charge-coupled device]] (CCD) mode for video cameras. This mode allows full-frame acquisition with conventional [[interlaced video|interlaced]] field output. It is conceptually identical to PsF, except PsF is used in
In frame shutter mode, a camera acquires 30 ([[NTSC]]) or 25 ([[PAL]]) independent images per second. These images are output as 60 (NTSC) or 50 (PAL) interlaced fields. The result is a progressive-scan signal, which is also compatible with traditional interlaced scanning systems.
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