Buy Sigma TC-2001 2x Teleconverter for Canon EF featuring Canon EF Teleconverter, 2x Magnification Factor, Communication between Lens & Camera, AF Operates at up to f/8, Two Special Low Dispersion Elements, Dust and Splashproof, Compatible with Select Sigma Lenses, Includes Soft Carrying Case. Review Sigma TC-2001 It is ideal for photojournalists and wildlife, nature and sports photographers who need to get close to distant and challenging subjects and it reduces the need to carry heavy telephoto lenses.The Extender EF 2x III features nine optical elements in five groups, ensuring improved optical performance. All optical elements have Canon's Super Enjoy more zoom on your existing lenses by choosing a Canon extender lens to add to your kit. with compatible RF lenses compact EF lens extender The Canon 1.4x lens extender extends the focal length of a lens by 40%, making (for example) a 200mm lens function as a 280mm lens. making them fully compatible with full-frame, APS-H and APS Box Dimensions (LxWxH) 9.6 x 4.8 x 4.6". Buy Tokina SZX 400mm f/8 Reflex MF Lens with 2x Extender Kit for Canon EF featuring EF-Mount Lens / Full-Frame Format, Fixed Aperture: f/8, Catadioptric Telephoto Lens, Manual Focus, Multicoating and Antioxidant Coating, Close Focus: 45.3", Front Filter Size: 67mm, 2x Extender. Review Tokina null. . Fotodiox Pro Autofocus 2x Teleconverter - AF Doubler x2.0 for Canon EOS EF Lenses and EF / EFs Cameras (Fits Full Frame) Lens Mount Adapter. SKU: 2x-EF-P. UPC: 847372029525. Quantity. $99.95. FotodioX EOS-2X-AF-TELE. Extend the reach of your existing Canon EF-mount lenses with this Autofocus 2x Teleconverter. This converter doubles the effective focal length of your lens, turning a 50mm lens into a 100mm optic for example. It also maintains communication between the lens and camera and uses multi-coated optics to limit ghosting and Box Dimensions (LxWxH) 9.6 x 4.8 x 4.6". Buy Tokina SZX 400mm f/8 Reflex MF Lens with 2x Extender Kit for Canon EF featuring EF-Mount Lens / Full-Frame Format, Fixed Aperture: f/8, Catadioptric Telephoto Lens, Manual Focus, Multicoating and Antioxidant Coating, Close Focus: 45.3", Front Filter Size: 67mm, 2x Extender. Review Tokina null. As to the 2X, I have some of the sharpest glass Canon has made (200 f2, 300 and 400 f2.8) and in my experience the 2X results in an excessive loss of sharpness, contrast, and overall image quality. It is a great device for turning an excellent quality lens into image results like that from a much lesser quality lens. In this video I will show you how to fit canon RF extender into mount adapter - YES IT IS POSSIBLE ! That way you can use an RF extender with EF lenses such

canon extender ef 2x compatible lenses