hockdub
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Canon 2x Extender EF. Attaches to telephoto l glass lenses and extends the focal length of the lens, also doubles the minimum aperture.
Info from B&H
The Canon EF 2x Extender is a high-quality teleconverter that preserves the image quality of the lens it's mounted to and multiplies its focal length by 2x. When combined with pro level EOS cameras & EF supertelephoto lenses with image stabilization, near imperviousness to weather extremes is achieved thanks to rubber gasket seals. Improved antireflective internal coatings also increase transmissivity & performance in backlit conditions.
The 2x extender (also known as a teleconverter) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300mm lens will effectively increase the focal length to 600mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are best used with longer telephoto lenses and are not recommended for lenses wider than 50mm, e.g. 28-105mm (35mm format).
Note: This teleconverter will only fit and work with a select list of lenses. Please click here for a compatibility chart of all compatible lenses. Canon Extender EF 2x II Compatibility Chart
Note: Autofocus will work only if the effective aperture is within the range of the camera (currently f/8 with most EOS cameras).
Converter is nearly brand new, and sells for $309 on b&h. Will sell this one for $225 SHIPPED with tracking.
Info from B&H
The Canon EF 2x Extender is a high-quality teleconverter that preserves the image quality of the lens it's mounted to and multiplies its focal length by 2x. When combined with pro level EOS cameras & EF supertelephoto lenses with image stabilization, near imperviousness to weather extremes is achieved thanks to rubber gasket seals. Improved antireflective internal coatings also increase transmissivity & performance in backlit conditions.
The 2x extender (also known as a teleconverter) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300mm lens will effectively increase the focal length to 600mm. A lens set to f/2.8 will now be f/5.6. Teleconverters are best used with longer telephoto lenses and are not recommended for lenses wider than 50mm, e.g. 28-105mm (35mm format).
Note: This teleconverter will only fit and work with a select list of lenses. Please click here for a compatibility chart of all compatible lenses. Canon Extender EF 2x II Compatibility Chart
Note: Autofocus will work only if the effective aperture is within the range of the camera (currently f/8 with most EOS cameras).
Converter is nearly brand new, and sells for $309 on b&h. Will sell this one for $225 SHIPPED with tracking.
