Name: Canon EF 17-40mm f4 L USM Lens
Brand: Canon
SKU: UCE-07-1070-3 7900002602
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, sharp results, and reliable L-series quality for landscapes, travel, and more....

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

The Canon EF 17-40mm f4 L USM Lens is a versatile wide-angle zoom designed for photographers who want dependable performance and flexible framing. This lens is in excellent condition and is a strong choice for landscapes, architecture, travel, and everyday creative work. Key Features<ul><li>Wide-Angle Zoom Range: 17-40mm coverage offers a practical blend of expansive views and everyday versatility.</li><li>Constant f/4 Aperture: Maintains a consistent maximum aperture throughout the zoom range for predictable exposure.</li><li>Canon EF Mount: Compatible with Canon EF-mount DSLR camera bodies.</li><li>L-Series Build: Built to Canon's professional L-series standards for a refined handling experience.</li><li>USM Autofocus: Fast, quiet autofocus helps support both still photography and general shooting use.</li><li>Wide-Angle Utility: Well suited to interiors, cityscapes, group shots, and travel scenes.</li><li>Reliable Everyday Choice: A proven lens design appreciated for its straightforward operation and practical focal range.</li></ul> If you're looking for a dependable wide-angle zoom with professional heritage, this Canon 17-40mm is ready to add flexibility to your kit.

Continental U.S.

Canon EF 17-40mm f4 L USM Lens

<h3 class="text-[1.5rem] font-semibold">100% Refund Guarantee for Lost, Damaged, or Misrepresented Items</h3>
At GearFocus, we're dedicated to providing a secure and reliable marketplace for creatives. Our buyer protection policy ensures peace of mind, safeguarding your purchases from unforeseen issues.
&nbsp;
<h3 class="text-[1.5rem] font-semibold">How It Works:</h3>
Follow These Steps:
<ol class="text-[1.3rem]">
<li>Contact the Seller: If there's an issue, contact the seller within 48 hours of delivery. Many problems can be resolved directly through their return policy. Be sure to provide clear photos or videos when messaging the seller.</li>
<li>Contact GearFocus: If the seller hasn&rsquo;t responded within 24 hours, email us at&nbsp;<a class="text-brand-secondary hover:text-brand-primary" href="mailto:support@gearfocus.com" target="_blank" rel="noopener noreferrer">support@gearfocus.com</a> with supporting documentation (photos, repair estimates, etc.).</li>
<li>We&rsquo;ll Take It from There: GearFocus will step in, review the situation, and collaborate with the seller. We&rsquo;ll notify you if additional details are needed to process your refund.</li>
</ol>
&nbsp;
<h3 class="text-[1.5rem] font-semibold">What&rsquo;s Covered?</h3>
To be covered, orders must be completed directly through GearFocus (including payment and shipment records) and issues reported within 48 hours of delivery or within 14 days of the expected delivery date if undelivered.
You qualify for a refund if your item is:
<ul class="text-[1.3rem]">
<li>Lost by the carrier</li>
<li>Damaged during shipping</li>
<li>Significantly different from the listing description or photos</li>
<li>Not delivered within 10 days of the expected arrival date</li>
</ul>
&nbsp;
<h3 class="text-[1.5rem] font-semibold">Seller Return Policies &ndash; Know Before You Buy</h3>
Sellers on GearFocus follow one return policy per listing, clearly outlined in the item description. Buyers are encouraged to&nbsp;review the return policy carefully before purchasing.
&nbsp;
<h3 class="text-[1.5rem] font-semibold">Return Policies Include:</h3>
<ul class="text-[1.3rem]">
<li>48-Hour Verification Period (For Verified Sellers): Buyers have 48 hours to inspect the item upon delivery. If discrepancies are found, the seller covers return shipping. (Excludes "As-Is" and "Poor" condition items)</li>
<li>14-Day No Questions Asked Return: Some approved sellers allow returns for any reason within 14 days. Buyers cover return shipping and seller fees.&nbsp;(Excludes items classified as "Poor" or "As-Is" , and Drones)</li>
</ul>
&nbsp;
Important: Return policies are set by the seller at the time of listing. Buyers cannot request to switch policies after purchase.
&nbsp;
<h3 class="text-[1.5rem] font-semibold">Exceptional Cases &ndash; Returns Outside the Seller&rsquo;s Policy</h3>
Occasionally, a seller may offer to accept a return outside of their stated policy. When this occurs:
<ul class="text-[1.3rem]">
<li>Both the buyer and seller must contact GearFocus Support at <a class="text-brand-secondary hover:text-brand-primary" href="mailto:support@gearfocus.com" target="_blank" rel="noopener noreferrer">support@gearfocus.com</a> or message us on <a class="text-brand-secondary hover:text-brand-primary" href="gearfocus.com" target="_blank" rel="noopener noreferrer">gearfocus.com</a>.</li>
<li>GearFocus will mediate and help negotiate responsibility for transaction fees and shipping.</li>
<li>Our goal is to achieve a fair resolution for both parties.</li>
</ul>
&nbsp;
<h3 class="text-[1.5rem] font-semibold">What Isn&rsquo;t Covered?</h3>
<ul class="text-[1.3rem]">
<li>Claims made after 48 hours of delivery (or 10 days for non-delivery)</li>
<li>Off-platform transactions</li>
<li>Buyer's remorse or returns outside of the seller&rsquo;s policy</li>
<li>Forwarded or re-shipped packages</li>
</ul>
&nbsp;
Questions? Contact us at <a class="text-brand-secondary hover:text-brand-primary" href="mailto:support@gearfocus.com" target="_blank" rel="noopener">support@gearfocus.com</a>.
&nbsp;
At GearFocus, we&rsquo;re committed to building trust and ensuring a smooth experience for all creatives, whether buying or selling.

Canon EF 17-40mm f4 L USM Lens

Description

Overview

Shipping & Payments

Ships From US

Buyer Protection

Secure Transactions

Customer Support