- Outstanding optical performance that visually matches the images quality of the host lens.
- Maintains AF operation within aperture limits of camera body. (Combines f/8 for EOS-1V and EOS-3 - f/5.6 for other EOS models.)
- Maintains IS operation.
- High level water and dust resistance equivelant to the EOS-1V and Super Tele L Series IS lens range - suitable for use in heavy rain.
- O-ring seals protect the mounts and release lever.

Telephoto Lens Accessory

Designed to match Canon's telephoto L Series lens range with improved optical performance that visually matches the image quality of the host lens and high-level weather resistance.

Standard inclusions with the EF2X II include:
- Extender Cap
- Lens Dust Cap E
- Lens Case LP811