Sony DCR-TRV30 Operating Instructions Manual page 124

Recording moving pictures on "Memory Stick"s – MPEG movie
recording
When recording in MEMORY mode
The angle of view is a little increased than one in CAMERA mode.
When selecting HIGH SPEED
Flickering or changes in color may occur. Also, your camcorder prevents focusing on
near objects.
During recording on "Memory Stick"
You cannot use the PB ZOOM function.
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