Pentax Optio MX4 Operating Manual page 89

Keeping the C Button Pressed
Recording starts when you keep the C button pressed for more than
one second. Recording will continue for as long as you keep the button
pressed. Recording stops when you take your finger off the C button.
Using the Zoom When Taking Movies
If you use the zoom when taking movies, hold the camera steady and
zoom in and out slowly using the low-speed zoom. Operating the zoom
too quickly or failing to hold the camera steady will affect the quality of
your movies.
You are recommended to use a tripod to prevent camera shake
when taking pictures at a high magnification rate.
Forcusing Range When Taking Movies
Focus mode
Autofocus (Normal)
Macro
Super Macro
Landscape
Manual Focus
0.1m –
0cm –
Using the Zoom 1p.52
Holding the Camera 1p.25
Wide Tele
∞ ∞
1.2m –
∞ ∞
∞ ∞
60cm –
5
87