Tokina atx-i 11-20mm f/2.8 CF Lens for Canon EF

The Canon EF-mount Tokina atx-i 11-20mm f/2.8 CF represents a modernized classic, crafted for enhanced intuitive and interactive functionality. This ultra-wide zoom lens is particularly well-suited for applications in landscape, architecture, interior, and astrophotography. With a constant maximum aperture of f/2.8, it ensures uniform brightness across the entire zoom range, making it advantageous for shooting in available light. The optical construction features a combination of aspherical and low dispersion elements, effectively minimizing various aberrations to enhance sharpness and clarity. Additionally, each element is multi-coated to mitigate flare and ghosting, thereby improving contrast and color fidelity in bright or backlit scenarios. To further enhance usability, this lens is equipped with a One-Touch Focus Clutch Mechanism, allowing for swift transitions between autofocus and manual focus settings, while its internal focusing design contributes to a responsive focusing experience.

• 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-molded 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 color fringing and chromatic aberrations throughout the zoom range for greater clarity and color accuracy.
  
  
• Anti-reflective multi-layer coated elements suppress flare and ghosting for improved contrast and color 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 top 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 the lens.