2.0x HD Auto Focus Teleconverter For Canon DSLR & SLR Camera - 7 Element

Increases focal length by 2x
Enlarges central part of image
Lightweight (4.5oz)
Optimized for megapixel photography
Engineered to highest precision & technical specs
Anti-reflection coating
Heavy duty construction will hold extra heavy lenses
Infrared compatible
Acts as a dingle diverging lens
Weather resistant
Suppresses aberration
Includes carring case & caps
Made in Japan
5 Year warranty