Canon EF 1.4X III Extender Teleconverter 1.4x Magnification 7-Element Optics for Super Telephoto Lenses (White) - New

Professional Telephoto Reach Extension

The Canon EF 1.4X III Extender multiplies your lens's focal length by exactly 1.4x, turning a 400mm lens into a 560mm powerhouse while maintaining excellent image quality. Featuring advanced 7-element optical construction arranged in 3 groups, this teleconverter delivers minimal chromatic aberration and phenomenal clarity. The integrated microcomputer ensures flawless communication between your camera body, lens, and extender for accurate autofocus and exposure control. Weighing just 7.9 oz (225g) and measuring 2.8 inches in diameter, it adds negligible bulk to your telephoto setup.

Advanced Optical Engineering

Careful element placement and multi-layer coatings work together to minimize ghosting and flare, even in challenging backlit situations. The optical formula has been optimized specifically for Canon's super telephoto lens lineup, ensuring edge-to-edge sharpness and contrast. With a compact 1.1-inch length (27.2mm), the extender integrates seamlessly into your optical path without compromising balance or handling. The 72mm maximum diameter matches professional lens mounting standards for secure attachment.

Professional-Grade Durability

Built to the same exacting standards as Canon's L-series lenses, the EF 1.4X III features robust dustproof and water-resistant construction that stands up to harsh field conditions. The innovative fluorine coating on the front and rear elements actively repels water, oil, smears, and fingerprints, making cleaning quick and effortless. This protective coating maintains optical clarity in humid environments and resists contamination during lens changes. The precision-machined mount ensures rock-solid attachment with zero play or wobble.

Seamless System Integration

Compatible with Canon's EF super telephoto lenses, this extender maintains full electronic communication for autofocus, image stabilization, and EXIF data transmission. The built-in microprocessor coordinates with your camera's AF system to deliver fast, accurate focusing even with the reduced light transmission. Professional wildlife, sports, and nature photographers rely on this extender to achieve greater reach without carrying additional heavy lenses, making it an essential component of any serious telephoto system.

✨ Key Features

• 1.4x focal length multiplication for extended telephoto reach
• 7-element optical design minimizes chromatic aberration
• Fluorine coating resists smears, fingerprints, and moisture
• Dustproof and water-resistant construction for field durability
• Built-in microcomputer maintains full AF and IS functionality
• Optimized coatings reduce ghosting and flare
• Compact 7.9 oz design adds minimal weight
• Compatible with Canon EF super telephoto lenses