Canon Extender EF 1.4x III

Canon Extender EF 1.4x III Main Specifications • Product Type: 1.4× Teleconverter / Extender • Compatible Mount: Canon EF • Magnification: 1.4× • Lens Construction: 7 Elements in 3 Groups • Maximum Diameter: Approx. 72.0mm • Length: Approx. 27.2mm • Weight: Approx. 225g Focal Length & Aperture Effect • Focal Length Increase: 1.4× • Maximum Aperture Reduction: 1 Stop • Minimum Aperture: Becomes 1 Stop Smaller • Example: A 400mm f/2.8 lens becomes equivalent to 560mm f/4 • Example: A 100-400mm f/4.5-5.6 compatible lens becomes 140-560mm f/6.3-8 Autofocus & Camera Communication • Autofocus: Supported with Compatible Canon EF Lenses and Camera Bodies • Electronic Communication: Supported • Lens Information Communication: Supported • Exposure Control: Supported • Image Stabilizer: Supported with Compatible IS Lenses • AF Performance: Depends on the attached lens and camera body's AF capabilities Optical Design • Optical Construction: 7 Elements in 3 Groups • Optical Design: Optimized for Compatible Canon Super-Telephoto and Telephoto Lenses • Lens Coating: Optimized coatings help reduce ghosting • Internal Reflection Control: Lens surfaces are treated to help minimize flare and ghosting Construction & Protection • Exterior: White Heat-Shielding Design • Dust & Water Resistance: Dust- and water-resistant construction • Fluorine Coating: Applied to the front and rear elements • Durability: Designed for professional telephoto shooting environments Compatible Lenses Canon specifies the Extender EF 1.4x III for use with compatible Canon EF telephoto, super-telephoto and selected telephoto zoom lenses. • EF Lens Compatibility: Selected compatible EF lenses only • EF-S Lenses: Not Compatible • EF-M Lenses: Not Compatible • RF / RF-S Lenses: Not Compatible Use with EF 100-400mm f/4.5-5.6L IS II USM • Compatibility: Supported • Effective Focal Length: 140–560mm • Effective Maximum Aperture: f/6.3–8 • Autofocus: Availability depends on the camera body's AF capability at the resulting effective aperture. Supplied Accessories • Extender Cap E II • Lens Dust Cap E • Lens Case LP811