- Wide-angle zoom 11-24mm f/4 lens is compatible with full-frame Canon EF-mount DSLRs, as well as APS-C-sized models where it will provide a 17.6-38.4mm equivalent focal length range.
- Constant f/4 maximum aperture offers consistent performance and light transmission throughout the zoom range.
- One Super Ultra Low Dispersion and one ultra-low dispersion element help to significantly reduce chromatic aberrations for improved clarity and color accuracy.
| - Four aspherical elements help to minimize distortions throughout the zoom range in order to maintain edge-to-edge sharpness and illumination.
- Both a Subwavelength Coating (SWC) and an Air Sphere Coating (ASC) have been applied to lens elements to reduce backlit flaring and ghosting for maintained light transmission and high contrast in strong lighting conditions.
- A ring-type Ultrasonic Motor (USM), along with an internal focusing system, high-speed CPU, and optimized AF algorithms, are employed to deliver fast, precise, and near-silent autofocus performance as well as full-time manual focus override.
| - Four aspherical elements help to minimize distortions throughout the zoom range in order to maintain edge-to-edge sharpness and illumination.
- Both a Subwavelength Coating (SWC) and an Air Sphere Coating (ASC) have been applied to lens elements to reduce backlit flaring and ghosting for maintained light transmission and high contrast in strong lighting conditions.
- A ring-type Ultrasonic Motor (USM), along with an internal focusing system, high-speed CPU, and optimized AF algorithms, are employed to deliver fast, precise, and near-silent autofocus performance as well as full-time manual focus override.
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