Tokina ATX-i 11-20mm F2.8 CF EOS Mount Lens

Tokina ATX-i 11-20mm F2.8 CF EOS Mount Lens

• Ultra-wide zoom is designed for APS-C-format Canon EF-mount cameras and provides a 17.6-32mm equivalent focal length range.
• Bright constant f/2.8 maximum aperture affords consistent brightness throughout the zoom range and offers improved control over depth of field.
• Three aspherical elements, including two glass-moulded elements and one P-MO hybrid element, help control spherical aberrations and distortions for sharper, more accurate rendering.
• Three SD (super-low dispersion) elements control colour fringing and chromatic aberrations throughout the zoom range for greater clarity and colour accuracy.
• Anti-reflective multi-layer coated elements suppress flare and ghosting for improved contrast and colour accuracy when working in strong lighting conditions.
• Silent-Drive focusing Motor (SD-M) pairs with a GMR sensor and an internal focusing design to achieve fast, responsive, and precise performance.
• One-Touch Focus Clutch Mechanism avails quick switching between autofocus and manual focus settings by either pushing or pulling the focus ring. When set to manual, focus response is especially smooth and benefitted by hard stops at the ends of the focusing range.
• Water-repellent lens coating makes wiping and cleaning the surface of the front glass element easier.
• Nine-blade diaphragm contributes to a smooth bokeh quality.
• Included lens hood blocks stray light from causing flare and also offers some physical protection the lens.
• 4 Elements in 12 Groups Optical Design
• 3x Aspherical Glass Elements
• 3x Super-Low Dispersion Glass Elements
• Constant maximum aperture of f/2.8
• Excellent optical performance with great Edge-to-edge sharpness, reduced flares and ghosting plus excellent contrast and improved optical resolution.
• Silent-Drive Autofocus Motor + GMR sensor for fast and accurate autofocus
• One-touch focus AF/MF Clutch Switch
• Internal Focus & Zoom for easy use of filters
• Water-repellent coating keeping the front element clean