AF 2X 4 Element - Pentax AF The PROMASTER 2x Autofocus Teleconverter is compact and lightweight and adds photographic versatility without the expense of an extra lens. This converter allows the focal length of your lens to be extended by a factor of 2 times. The 1.7x factor has a minimal reduction to your effective aperture of only 2 stops. The PROMASTER 2x Autofocus Teleconverter communicates with most lenses for full compatibility. For use with lenses with a maximum aperature of f/3.5 or higher Lens Construction: 4 Elements in 4 Groups Lens Coating: Multicoated Length: 26mm Weight: 4.5 oz. Includes case Available to fit: Canon EOS, Nikon, KonicaMinolta, Sony, Pentax, and Samsung Digital and Traditional SLRs

• Promaster 2X Auto Focus Teleconverter - fits Pentax and Samsung Digital and Traditional SLRs