EF300mm f/4L USM
¡With Extender EF2X II attached to the lens, only manual focus is possible. However, with the
EF400mm f/5.6L USM
¡With Extender EF1.4X II attached to the lens, only manual focus is possible. However, with the
¡With Extender EF2X II attached to the lens, only manual focus is possible.
For all lenses
¡First attach the Extender to the lens, then attach the lens to the camera. Detach it from the camera in the reverse order. If you attach the lens to the camera first, misoperation may occur.
¡Only one Extender can be attached to the lens and camera.
¡If you use an Extender on the lens mounted on a EOS A2/A2E/5, set the exposure compensation to
When an Extender is attached, the AF speed will become slower by design to retain proper AF control.