Metabones Contax/Yashica to Micro Four Thirds Speed Booster  type_Audio Leitz Extender-R 2x teleconverter for

Leitz Extender-R 2x teleconverter for R series SLR cameras in excellent condition

Compatible with Pentax K-mount lenses (sold separately)

It has a "hat trick" of sports features like a 35mm f3

this is a heck of a flash

lens for Canon FD-mount cameras

Metabones Contax/Yashica to Micro Four Thirds Speed Booster &nbsptype_Audio Leitz Extender-R 2x teleconverter forA genuine Metabones Speed Booster adapter to mount Contax Yashica SLR lenses to Micro Four Thirds cameras. A Speed Booster slightly reduces the crop of your lenses (from 2x to about 1. 5x) and adds an extra stop of light, to boot. Not a bad bargain! In near new condition, with original box.