The Pentax 2 X Rear Converter for K Mount is a teleconverter designed for Pentax cameras with a K Mount. This manual focus unit has a maximum aperture of f/1 and a fixed focal length suitable for prime lenses with a k mount lens front. Weighing 126g, it is part of the Pentax A series, offering compatibility with Pentax cameras and lenses. This rear converter allows for extending the focal length of lenses, providing versatility in photography and videography. Optics clean and no marks on outer although the case is tatty but functional
