Canon EF 11-24mm F4L USM

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L-series Optics For the Widest Zoom Canon has Ever Made

Canon EF 11-24mm F4L USMA unequivocally flexible wide-angle zoom offering a state-of-the-art optical layout with constant f/4 ultimate aperture opening, the Canon 11-24mm f/4L EF USM 35mm Lens is a family member of the revered L-series lenses engineered for full-frame Canon EOS Digital SLRs. Containing a solitary Super UD lens element and a single UD element providing a significant curtailment of chromatic aberrations allowing four aspherical elements assist in minimizing distortions through the entire zoom range and deliver persistent edge-to-edge illumination and sharpness. Both ASC and SWC lens coatings have been administered to the elements as a way of diminishing ghosting and lens flare for enhanced color accuracy and contrast. Ideally suited for architectural and landscape photography, this lens handles ultra-wide thru wide-angle perspectives while covering its versatile zoom latitude with intuitive handling. and sophisticated optical components

A ring-style Ultrasonic Motor delivers smooth, fast, and near-stealth AF, which is further takes advantage of the full-time manual over-ride focus function and internal focusing design. The lens is resistant to both dust and water, while fluorine coatings are applied to both the rear and front elements as a way of protecting from smudges and fingerprints and from having an affect on image quality.

  • Wide-angle zoom 11-24mm f/4 lens is compatible with full-frame EOS DSLRs, as well as APS-C-sized sensors 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 UD (Ultra Low Dispersion) and one UD 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.
  • Full-time manual focus operation is available for fine-tuning of your focus position when working in the AF mode.
  • A weather-resistant design protects the lens from dust and moisture to enable its use in inclement conditions. Additionally, fluorine coatings have also been applied to the front and rear lens elements for further protection against fingerprints and smudging.
  • Nine rounded diaphragm blades contribute to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
  • Lens' design accepts rear insert-type gelatin filters, which are cut-to-size and inserted behind the rear lens element.

  • Specifications
    Lens type Zoom lens  
    Max Format size 35mm FF  
    Focal length 1124 mm  
    Image stabilisation No  
    Lens mount Canon EF  
    Aperture
    Maximum aperture F4.0  
    Minimum aperture F22.0  
    Aperture ring No  
    Number of diaphragm blades 9  
    Aperture notes Circular aperture  
    Optics
    Elements 16  
    Groups 11  
    Special elements / coatings Four aspherical, one Super UD, one ED elements. Sub-wavelength structure, air sphere, super spectra, and fluorine coatings.  
    Focus
    Minimum focus 0.28 m (11.02)  
    Maximum magnification 0.16  
    Autofocus Yes  
    Motor type Ultrasonic  
    Full time manual Yes  
    Focus method Internal  
    Distance scale Yes  
    DoF scale No  
    Focus distance limiter No  
    Physical
    Weight 1180 g (2.60 lb)  
    Diameter 108 mm (4.25)  
    Length 132 mm (5.2)  
    Sealing Yes  
    color Black  
    Zoom method Rotary (internal)  
    Power zoom No  
    Zoom lock No  
    Filter notes Drop-in filter holder  
    Hood supplied Yes  
    Tripod collar No  
    Optional accessories Lens pouch LP1424


    Accessories

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    Canon EF 11-24mm F4L USM Lens

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