Olympus E-500 Basic Manual page 16

Lens basics
4
Align the lens attachment mark (red) on
the camera with the alignment mark
(red) on the lens, then insert the lens
into the camera's body. Rotate the lens
clockwise until you hear it click.
Lens attachmentmark(Red)
Alignmentmark(Red)
Lenscapip__
5 Remove the lens cap.
Removing the lens from the camera
1 Make sure the power switch is
set to OFF.
2 While pressing the lens release
button, remove the lens from
the camera by rotating it
counterclockwise.
Lens release button