User manual
Canon EF 11-24mm f 4L USM

User Manual for Canon EF 11-24mm f 4L USM Lens

• Product category: SLR Lenses Canon
• Brand: Canon
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Canon SLR Lenses

Product description

• 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.

• As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.

• Protective fluorine coating has been applied to the front bulbous element to resist fingerprints and smudges and to make cleaning significantly easier.

• Lens's design accepts rear insert-type gelatin filters, which are cut-to-size and inserted behind the rear lens element.

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Technical parameters

Canon EF 11-24mm f/4L USM Specs

Focal Length	11 to 24mm
Maximum Aperture	f/4
Minimum Aperture	f/22
Lens Mount	Canon EF
Format Compatibility	Full-Frame
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