Canon Extender EF 1.4x III brand_Contax which is to say that

which is to say that it's not just a terrestrial camera in a bulky housing

and compatibility with any Pentax K-mount lens

5 USM is in excellent condition

or you can use it by itself in case you're just curious how far away something is

and two 52mm threaded extension tubes

Canon Extender EF 1.4x III brand_Contax which is to say thatCanon Extender EF 1. 4x III 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 box and pouch.