Fotodiox Pro Autofocus 2x Teleconverter - AF Doubler x2.0 for Canon EOS EF Lenses and EF / EFs Cameras (Fits Full Frame)

Description Specs Compatibility Notes Product Highlights: • Doubles the focal length of a Canon EF lenses (2.0x Magnification Factor) (Will not fit all EFs lenses due to long rear element length) • Communication between lens & camera enables auto focus, auto iris & image stabilization • Lens construction features 4 elements in 3 groups for sharp images • A maximum aperture of f/4 or greater is required in order to fully utilize the autofocus capabilities. • Limited 2-Year Manufacturer Warranty The Fotodiox 2x Teleconverter for Canon cameras is a precision optical component designed to expand your photographic capabilities. This premium quality 2x teleconverter, effectively doubles the focal length of the lens it's used with and maintains the resolution and contrast of any fine optic. The 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 300 mm lens will effectively increase the focal length to 600 mm and a lens set to f/2.8 will now be f/5.6. A maximum aperture of f/4 or greater is required in order to fully utilize the autofocus capabilities. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors. Manual focusing is recommended when using lenses with a smaller open f-stop value than those given above. A teleconverter is a portable, high-quality and versatile accessory that's well worth having in your camera bag! Back to Highlights Lens Mount Canon EOS (EF) Mount D/SLR Lenses Body Mount Canon EOS (EF / EFs) Mount D/SLR Cameras Teleconversion 2.0x Magnification Factor Product Dimensions 2.8 x 2.6 x 1.3 in (7 x 6.5 x 3.3 cm) @ 0.3 lb (4.4 oz) Shipping Dimensions 5 x 5 x 5 in (12.7 x 12.7 x 12.7 cm) @ 0.5 lb (8 oz) Manufacturer Fotodiox Inc. Warranty Limited 24-Months • This teleconverter will not work with EF-S lenses • A maximum aperture of f/4 or greater is required in order to fully utilize the autofocus capabilities. • AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors • Manual focusing is recommended when using lenses with a smaller open f-stop value than those given above. • To remove the adapter, move the release lever (circled in red) in the direction of the red arrow: All pictures are for illustration purposes only. Actual product may vary slightly due to ongoing improvements in design.