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

The Canon EF 11-24mm f/4L USM is an ultra-wide L-series zoom lens engineered for full-frame Canon EF-mount DSLRs (and compatible with APS-C bodies as a 17.6–38.4mm equivalent). Delivering an ultra-wide field of view with minimal distortion, it is ideal for architecture, interior, and landscape photography. The optical layout includes one Super UD element, one UD element, and four aspherical elements to maintain edge-to-edge sharpness and control chromatic aberrations. Outfitted with Subwavelength (SWC) and Air Sphere (ASC) coatings, a fast ring-type Ultrasonic Motor (USM), professional weather sealing, and a rear gelatin filter holder, it provides accurate color and reliable field performance.

Key Features and Specifications

* Canon EF Mount (Full-Frame & APS-C): Compatible with full-frame DSLRs and APS-C bodies (17.6–38.4mm equivalent focal length range).
* Ultra-Wide 11-24mm Zoom Range: Offers expansive wide-angle perspectives with straight-line architectural rendering.
* Constant f/4 Maximum Aperture: Ensures consistent exposure and light transmission across the entire zoom range.
* Super UD, UD, & 4 Aspherical Elements: Reduces chromatic aberrations, geometric distortion, and illumination falloff for sharp overall images.
* Dual Anti-Reflective Coatings (SWC & ASC): Suppresses lens flare and ghosting when working in backlit environments.
* Ring-Type USM Autofocus: Internal focus design with optimized AF algorithms provides fast, quiet autofocus with full-time manual override.
* L-Series Weather Sealing & Fluorine Coating: Sealed against dust and moisture, with protective fluorine coating on the front and rear elements.
* Integrated Rear Gelatin Filter Holder: Accepts cut-to-size gel filters inserted behind the rear element.

Condition and Included Accessories

* Included Accessories: Caps included.
* Physical and Operational Condition: Very light dust inside elements, does not affect photos.