Canon Extender EF 1.4x II  type_Darkroom Accessories is just fine

is just fine

Of note: this lens includes a rear lens cap but does not include its special "front" lens cap (the part that covers the lens tube which protrudes into the lens)

battery-powered light panel for stills or video

and everything fits together well

A professional full-frame ultrawide lens with Canon's premium L glass and construction

Canon Extender EF 1.4x II &nbsptype_Darkroom Accessories is just fineCanon Extender EF 1. 4x II teleconverter, in excellent cosmetic condition. Increases the effective focal length of the lens mounted to it by forty percent while maintaining complete communication between lens and camera. Since the teleconverter extends into the back of the lens, not all lenses may be mounted. Please confirm compatibility between your intended lens and this teleconverter. Clean glass and excellent function. Includes pouch.