Zoom; Using The Optical Zoom - Olympus CAMEDIA C-5000 Zoom Reference Manual

Zoom

Telephoto and wide-angle shooting are possible at 3x magnification (the
optical zoom limit, equivalent to 38 mm – 114 mm on a 35 mm camera). When
taking still pictures, you can increase zoom magnification to a maximum of
approximately 12x by combining the optical zoom with the digital zoom (with
record mode set to SQ1 or SQ2).
During movie recording, the digital zoom magnification is 3x.
Camera movement is likely to occur at higher magnifications. Stabilize the
camera with a tripod, etc. to avoid camera movement.

Using the optical zoom

Mode dial
3
1
Push or pull the zoom lever.
Wide-angle:
Push the zoom lever
toward W to zoom out.
54
Zoom lever
Telephoto:
Pull the zoom lever toward
T to zoom in.