Extender EF 2X II

• 2x Magnification
• Lens Construction: 7 elements in 5 groups
• High-quality teleconverter that preserves the image quality of the lens it's mounted to
• Features a new seven-element design, and same weather-resistant design and anti-reflection internal construction
• Autofocus is possible with any EOS body if the lens has an f/2.8 or faster maximum aperture