Enhanced Magnification: Doubles the focal length of compatible Canon EOS EF and EF-S lenses, bringing distant subjects closer with remarkable clarity. Premium Build Quality: Constructed with 4 elements in 4 groups, the lens ensures superior image performance and durability. Durable Design: Made from anodized aluminum, providing a sturdy, lightweight, and corrosion-resistant body for long-lasting use. Optical Excellence: Features multi-coated optical glass with anti-reflection coating, reducing glare and enhancing light transmission for sharper, more vivid images. Versatile Compatibility: Seamlessly integrates with a wide range of Canon EOS EF and EF-S lenses, expanding your photographic capabilities.