Canon EF 17-40mm f/4L USM Lens
The Canon EF 17–40mm f/4L USM is a professional ultra wide-angle zoom lens designed for Canon EF mount cameras. With its constant f/4 aperture, rugged L-series construction, and fast USM autofocus, it is a reliable choice for landscape, architecture, and travel photography.
- 17–40mm ultra wide-angle zoom range
- Constant f/4 aperture across the zoom range
- Canon L-series optical quality with weather sealing
- Ring-type USM for fast, quiet autofocus
- Compact and lightweight for an L-series lens
- Compatible with all Canon EF mount cameras
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Professional Ultra Wide-Angle Zoom for Canon EF
The Canon EF 17–40mm f/4L USM Lens is a trusted ultra wide-angle zoom lens built for photographers who need reliability, portability, and professional image quality. Designed for Canon EF mount DSLR cameras, it delivers excellent performance for both full-frame and APS-C users.
Versatile 17–40mm Wide-Angle Coverage
Covering a flexible 17–40mm focal length range, this lens is ideal for landscapes, architecture, interiors, and travel photography. On APS-C cameras, it provides an effective standard-to-wide zoom range, making it highly versatile across different camera bodies.
Constant f/4 Aperture for Consistent Results
The constant f/4 aperture ensures consistent exposure throughout the zoom range. It offers excellent sharpness and depth-of-field control, making it suitable for daylight shooting, long exposures, and tripod-based landscape work.
Canon L-Series Optical Performance
As part of Canon’s renowned L-series, the lens delivers high contrast, accurate color reproduction, and dependable sharpness. Advanced coatings help reduce flare and ghosting, even when shooting in challenging lighting conditions.
Fast and Reliable USM Autofocus
The built-in ring-type Ultrasonic Motor (USM) provides fast, accurate, and near-silent autofocus performance. Full-time manual focus override allows precise adjustments without switching out of autofocus mode.
Lightweight and Weather-Sealed Design
Despite its professional build, the Canon EF 17–40mm f/4L USM is relatively lightweight and compact for an L-series lens. Its weather-sealed construction makes it suitable for outdoor shooting in demanding environments.
Ideal Applications
- Landscape and nature photography
- Architecture and interior photography
- Travel and documentary photography
- Cityscapes and outdoor scenes
- Professional full-frame and APS-C DSLR use
Key Highlights
- 17–40mm ultra wide-angle zoom lens
- Constant f/4 aperture
- Canon L-series professional optics
- Ring-type USM autofocus with manual override
- Compact, lightweight, and weather-sealed build
What’s in the Box
- Canon EF 17–40mm f/4L USM Lens
- Lens Hood
- Front Lens Cap
- Rear Lens Cap
- Soft Lens Case
- User Documentation
The Bank Of Electronics guarantees 100% genuine Canon products, secure packaging, and dependable after-sales support. The Canon EF 17–40mm f/4L USM remains a popular ultra wide-angle L-series lens for photographers seeking professional quality in a lightweight and reliable package.
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You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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