Canon XH A1 Instruction Manual page 34

Zoom Preset
This function enables any given zoom setting to be memorized and to return to that zoom setting
instantly.
Presetting the Zoom
1. Set the POSITION PRESET switch to ZOOM.
2. Move the POSITION PRESET ON/SET switch to SET.
The preset zoom position appears in yellow on the zoom indicator.
Returning to the Preset Zoom Position
Move the POSITION PRESET ON/SET switch to ON.
The camcorder returns to the preset zoom position.
To return to the preset zoom position the camcorder uses the speed set for the constant zoom speed
(when the ZOOM SPEED switch is set to C).
34
POSITION PRESET switch
POSITION PRESET ON/SET switch