Canon EOS A2E - Manual (Page 21)

1) Remove the camera body cap.
2) Align the red dots on the lens and camera
body, then rotate the lens clockwise until it
locks in place with a click.
• To remove the lens, press the lens release
button while turning the lens counter­
clockwise.
When the lens is removed from the camera,
place it face down on a stable surface to pre­
vent damage to the lens surface and elec­
tronic contacts.