Using The Tripod Mount - Canon EF300mm F2.8L IS USM Instructions Manual

10. Using the Tripod Mount

Adjusting the Tripod Mount
Loosening the orientation lock knob on the tripod mount allows you to turn the lens and camera freely.
This is useful when you want to switch the camera between landscape and portrait positions while it is
mounted on a tripod. Once you have set the camera to the desired position, tighten the lock knob
firmly.
Detaching the Tripod Mount
First remove the lens from the camera and then remove the tripod mount from the lens as shown
below. To attach the tripod mount, reverse the procedure.
Loosen the orientation lock
knob.
ENG-14
(EF300mm f/2.8L IS USM only)
Align the red mark on the
tripod mount with the lens
mount index.
Rotate the tripod mount to
align the red marks.
Move the tripod mount
towards the back of the
lens.