Panasonic HDC-SD20 Operating Instructions Manual page 134

Functions
MF assist function
Hi-speed burst shooting mode
Flash
Shutter sound
Change of white balance
Adjusting the shutter speed, iris/gain
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Conditions which disable the functions
≥ When digital zoom (16k or higher) is used
≥ When the digital zoom is set to [40k] or [1000k]
≥ When the AF tracking is used
≥ When the Intelligent auto mode is on
≥ While recording motion pictures
≥ When PRE-REC is used
≥ When the colour night view function is used
≥ When the hi-speed burst shooting mode is on
≥ When the sunset or fireworks mode of scene mode is
used.
≥ While recording motion pictures
≥ When PRE-REC is used
≥ When digital zoom (16k or higher) is used
≥ When the colour night view function is used
≥ When the beach, sunset or fireworks mode of scene
mode is used
≥ When the colour night view function is used
≥ When the scene mode is used
≥ When the hi-speed burst shooting mode is on