Canon
Canon 9520B002 EF 11-24mm f/4L USM Wide Angle Lens
★★★★★
Canon's widest rectilinear zoom lens delivers an extraordinary 11mm ultra-wide perspective with L-series optical excellence.
$1,998.00*$3,298.01Save 39%
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Overview
Key Features
L-series ultra-wide zoom lens with an impressive 11mm starting focal length
New optical design and the use of one Super UD element and one UD lens element
Subwavelength Coating (SWC) and Air Sphere Coating (ASC)
Inner focusing, ring USM, a high-speed CPU and optimized AF algorithms
Full-time manual focus allows manual focus adjustment while in AF Mode
Specifications
Focal Length
11–24mm
Maximum Aperture
f/4
Lens Construction
16 elements in 11 groups
Diagonal Angle of View
126°05'–84°00'
Focus Adjustment
AF with full-time manual focus
Closest Focusing Distance
0.28m (11 in.)
Filter Size
Rear insert-type
Aperture Blades
9 (circular)
Max Diameter × Length
108.0 × 132.0mm (4.3 × 5.2 in.)
Weight
1180g (41.6 oz.)
Mount
Canon EF
Pros & Cons
👍 Pros
- Unmatched 11mm ultra-wide starting focal length in a full-frame rectilinear zoom lens.
- Advanced coatings (SWC and ASC) dramatically reduce ghosting and flare even in challenging backlit scenes.
- Fast, silent ring-type USM autofocus with full-time manual focus override.
- Robust L-series build quality with dust and water-resistant sealing and fluorine-coated elements.
- Four aspherical elements deliver well-controlled distortion across the entire 11–24mm range.
👎 Cons
- Premium price point places it among the most expensive wide-angle zoom lenses available.
- At approximately 41.6 oz (1180g), it is heavy and adds significant weight to a camera kit.
- Cannot use standard front screw-on filters due to the bulging front element design.
- Fixed f/4 maximum aperture is slower than some competing wide-angle primes.
- Only available in Canon EF mount—requires an adapter for Canon RF-mount mirrorless bodies.
Frequently Asked Questions
Does the Canon EF 11-24mm f/4L USM accept front-mounted screw-on filters?
No, due to its large, curved front element, this lens uses a rear insert-type filter holder rather than traditional front-threaded filters.
Is this lens compatible with Canon APS-C crop-sensor bodies?
Yes, it mounts on any Canon EF-mount body, though on APS-C cameras the effective field of view is equivalent to approximately 17.6–38.4mm, reducing the ultra-wide advantage.
How does the lens handle distortion at the widest 11mm setting?
Canon engineered four aspherical elements to minimize distortion across the zoom range. Some barrel distortion is visible at 11mm but is well-controlled for a rectilinear lens at this focal length and is easily corrected in post-processing.
Is the 11-24mm f/4L weather-sealed?
Yes, it features dust and water-resistant construction consistent with Canon's L-series standards, along with fluorine coatings on the front and rear elements to repel moisture and fingerprints.
How close can this lens focus?
The minimum focusing distance is 0.28m (approximately 11 inches) across the entire zoom range.
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