Canon Extender EF 1.4x III  type_Digital Cameras which means that the leg

which means that the leg extensions can be screwed in half for transport

with excellent sharpness throughout its aperture range

There's a GPS in there

The lenses are technically interchangeable

Canon Extender EF 1.4x III &nbsptype_Digital Cameras which means that the legCanon Extender EF 1. 4x III teleconverter, in excellent cosmetic condition. Increases the effective focal length of the lens mounted to it by 1. 4x while maintaining complete communication between lens and camera. Canon's teleconverters are not general purpose: they will work specific lenses only, and autofocus function may vary by lens and camera. Be sure to check compatibility before buying! Clean glass and excellent function. Includes pouch.