Kenko 2.0X AF Compatible Teleconverter for Pentax SLR/Digital SLR Cameras

* For Pentax digital and film SLR cameras and lenses * Effectively doubles the focal length of any lens it is used with * Economical 4 element multi-coated glass optics * AF compatible with large aperture lenses * Electronic circuit board to maintain auto-exposure functions * Includes front and rear caps Weight: 0.4 lbs