The Bower's 2x DGII Teleconverter (7 Element) for Canon will effectively double the focal length of your Canon lens, while maintaining the autofocus function - a 35 mm lens becomes a 70 mm lens. This 7-element teleconverter uses multi-coated optics to deliver improved image quality. With an 85 mm f/1.4 lens, for example, the focal length will become 170 mm, which effectively sets the maximum aperture at f/2.8 (cutting the amount of light captured by two f/stops). This teleconverter is a portable, high-quality and versatile accessory that's well worth having in your camera bag. It's only compatible with lenses with a maximum aperture greater than f/4.0 in order to fully utilize its autofocus capabilities.
- Doubles the focal length of a Canon EF lens (not compatible with EF-S
- 7 optical elements for sharp images
- Magnification: 2x
- Lens Elements/Groups: 7 elements
- Length: 2.15" (5.46 cm)
- Diameter: 2.65" (6.73 cm)
- Weight: 8.0 oz (227 g)