Key Features EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/22 Nine FLD Elements, One SLD Element Super Multi-Layer Coating Hyper Sonic AF Motor Intelligent OS Image Stabilization Removable Arca-Type Tripod Foot Dust- and Moisture-Sealed Construction Rounded 11-Blade Diaphragm Compatible with Sigma Teleconverters الماركة سيجما الحالة مستعمل