Description Designed to attach between a Canon or compatible EF/EF-S lens & the camera, this Digital Nc Teleconverter doubles the magnification of the connected lens, dramatically boosting its apparent focal length with a minimal increase to the size or weight of the camera and lens combination. Electronic communication between an attached camera and lens is supported, and inside this teleconverter, four multicoated optical elements in three groups help to ensure clarity while reducing ghosting and flare. In Addition, this teleconverter will cause your lens to lose 2 F stops of light, so an f/2.8 lens will drop down to a f/5.6 making your auto focus more difficult. As a result, switch to manual focus to capture the shot.

Technical
Mount: Canon EF/EF-S
Magnification: 2x
Optical Design: 4 Elements in 3 Groups
Light Loss: 2 Stop
Length: 1.42" / 36 mm
Diameter: 2.68" / 68 mm
Weight: 5.89 oz / 167 g
Package Weight: 0.535 lb
Box Dimensions (LxWxH): 3.5 x 3.5 x 3.3"