Name: Canon EF 17-40mm f4 L USM Lens
Brand: Canon
SKU: UCE-07-1070-3 1924095
Price: 334.22 USD
Availability: InStock

Exhibits minimal signs of wear, noticeable only upon close inspection. Fully operational and includes all items shown in the listing photos. The actual item for sale is pictured unless specifically noted otherwise. The condition rating applies to the core item and not any accessories.

Canon EF 17-40mm f/4L USM lens delivers versatile wide-angle performance, constant f/4 aperture, and L-series reliability. Shop now on GearFocus.

Covering a flexible wide-angle focal length, the Canon EF 17-40mm f/4L USM is a robust zoom lens from the esteemed L-series collection, offering a consistent f/4 maximum aperture alongside an advanced lens architecture and sturdy build. It includes one Super Ultra-Low Dispersion element and three aspherical elements to greatly minimize chromatic and spherical distortions for increased sharpness, lucidity, and color precision. Additionally, a Super Spectra coating has been used to reduce the impact of flare and ghosting for better contrast in challenging lighting scenarios. Alongside its imaging attributes, this lens integrates a ring-type USM and an internal focusing system to deliver fast, silent, and precise autofocus, with the added benefit of manual focus override. Plus, the construction includes weather-sealing for operation under adverse weather conditions.

The Canon EF 17-40mm f/4L USM is a versatile wide-angle zoom lens designed for full-frame and APS-C DSLR cameras. It features a constant f/4 aperture, robust weather-sealed construction, and high-quality optics for sharp and vibrant images.

The Canon EF 17-40mm f/4L USM is a wide-angle zoom lens designed for **Canon EF mount** cameras. The **Canon EF** mount is the confirmed interface for this lens, placing it squarely within Canon's established DSLR ecosystem and making it a plug-and-play option for photographers already shooting with EF-mount bodies. The lens carries the L-series designation and covers a **17-40mm** focal length range that is well-suited to wide-angle applications including landscape, architectural, and interior photography. For buyers on the used market through GearFocus, the Canon EF mount compatibility is the primary verified specification available in this listing. Shoppers should reach out to the seller to confirm additional details such as optical condition, autofocus functionality, and any accessories included with the unit. The EF mount's longevity and widespread adoption mean that this lens integrates seamlessly into a large installed base of Canon camera bodies.

Part of Canon's professional L-series lineup, featuring the red ring designation that signals higher-grade optics and build quality.

Canon EF L-Series Lens

Covers a versatile wide-angle range well-suited for landscapes, architecture, interiors, and environmental portraits.

17-40mm Wide-Angle Zoom

Maintains a consistent f/4 maximum aperture throughout the zoom range for predictable exposure settings.

Constant f/4 Aperture

Ultrasonic motor delivers fast, near-silent autofocus with full-time manual focus override without switching modes.

Ring-Type USM Autofocus

Fully compatible with the entire Canon EF DSLR ecosystem, from APS-C to full-frame bodies, with no adapter required.

Canon EF Mount

Dust and moisture resistant design makes it suitable for outdoor shooting in challenging conditions.

Weather-Sealed Construction

Reduces distortion and spherical aberration across the zoom range for sharper, more accurate wide-angle images.

Three Aspherical Elements

Minimizes chromatic aberration and color fringing, particularly useful at the wider end of the focal range.

Super UD Element

The front element does not rotate during focusing, making it straightforward to use with polarizing and graduated filters.

Rear Focusing System

User Manual

Canon EF 17-40mm f/4L USM

Canon EF 17-40mm f/4L Review

Canon EF 17-40mm f/4L USM Lens

2026-01-30-phase10-canon

2026-01-30T07:04:59.164Z

Canon 17-40mm f/4 USM 'L' lens review with samples (full frame and APS-C)

the MOST UNDERRATED lens of all time | Canon EF 17-40mm f/4

The Canon EF 17-40mm F/4.0L USM Lens Review

Notes:
Grips had some slight oxidation that may come back.

The Canon EF 17-40mm f4 L USM Lens is a versatile wide-angle zoom that suits landscapes, architecture, travel, and everyday creative shooting. This excellent-condition lens offers dependable L-series performance and is a strong choice for photographers looking for a reliable Canon EF zoom with a compact, practical design. Key Features<ul><li>Wide-Angle Zoom Range: 17-40mm coverage provides flexibility for broad scenes, environmental portraits, and general-purpose shooting.</li><li>Constant f/4 Aperture: Maintains a consistent maximum aperture throughout the zoom range for predictable exposure.</li><li>Canon EF Mount: Designed for compatibility with Canon EF-mount DSLR camera bodies.</li><li>L-Series Build: Part of Canon's professional L lineup, known for solid construction and dependable handling.</li><li>USM Autofocus: Ultrasonic Motor focusing supports quick, quiet, and accurate operation.</li><li>Travel-Friendly Design: A practical lens choice for photographers who want wide-angle capability without excessive bulk.</li><li>Creative Versatility: Well suited for landscapes, interiors, street scenes, and documentary-style work.</li></ul> If you're looking for a proven wide-angle zoom with classic Canon handling, this EF 17-40mm f4 L USM is ready to become a useful part of your kit.
 
Condition Notes
Grips had some slight oxidation that may come back.

Continental U.S.

Canon EF 17-40mm f4 L USM Lens

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<h3 class="text-[1.5rem] font-semibold">Return Policies Include:</h3>
<ul class="text-[1.3rem]">
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<h3 class="text-[1.5rem] font-semibold">Exceptional Cases &ndash; Returns Outside the Seller&rsquo;s Policy</h3>
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Canon EF 17-40mm f4 L USM Lens

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