Canon EF 11-24mm f4L USM Lens

The Canon EF 11‑24mm f/4L USM Lens is one of Canon’s most celebrated ultra‑wide‑angle zoom lenses, designed for professionals and advanced enthusiasts who demand dramatic perspectives, exceptional optical performance, and rugged reliability. With an expansive 11–24 mm focal range — the widest rectilinear zoom ever made for Canon’s EF mount — this lens dramatically expands creative possibilities for landscape, architecture, interior, and environmental photography.

Ultra‑Wide Zoom Range & Optical Performance

The standout feature of this lens is its 11–24 mm ultra‑wide zoom range, delivering a 126° 05′ diagonal field of view at 11 mm on full‑frame cameras. This allows photographers to capture sweeping vistas, tight interior spaces, and dramatic perspectives with minimal distortion while maintaining sharpness across the frame.

To ensure superior image quality, the optical formula includes 16 elements in 11 groups, featuring special glass such as Super UD (Ultra‑Low Dispersion) and UD elements that significantly reduce chromatic aberration. Four aspherical lens elements further help suppress distortion and maintain edge‑to‑edge clarity throughout the zoom range.

Advanced Coatings & Contrast

To improve contrast and resist flare and ghosting in challenging lighting conditions, Canon applies Subwavelength Coating (SWC) and Air Sphere Coating (ASC) to critical optical surfaces. These technologies boost light transmission and help maintain color fidelity, even when shooting toward bright light sources such as the sun or cityscapes at dusk.

Autofocus & Handling

The lens uses a ring‑type Ultrasonic Motor (USM) with internal focusing, delivering fast, smooth, and near‑silent autofocus performance. It also provides full‑time manual focus override, so you can fine‑tune focus instantly without switching modes.

Durable Construction & Weather Resistance

Built to Canon’s L‑series standards, the EF 11‑24mm f/4L USM features robust weather‑ and dust‑resistant construction, allowing confident use in outdoor and professional environments. Fluorine coatings on the front and rear elements repel smudges, fingerprints, and dust, making cleaning easier and helping preserve image quality over time.

Special Features

• Built‑in petal‑type lens hood optimized for wide‑angle use.

• Rear drop‑in filter system accepts gelatin filters since front filter threads aren’t possible with such a wide optical design.

• Rounded 9‑blade diaphragm delivers smooth out‑of‑focus highlights and pleasing bokeh.