Canon EF 17–40mm f/4L USM Lens – Ultra-Wide Zoom, Caps & Hood, Excellent

Lens Description

The Canon EF 17–40mm f/4L USM is a professional-grade ultra-wide zoom lens from Canon’s flagship L-series, designed for full-frame and APS-C EF-mount DSLRs. With a constant f/4 aperture, ring-type ultrasonic motor (USM), and weather-resistant construction, it’s ideal for landscape, architecture, travel, and event photography. This example is in Excellent Condition, fully tested and includes front/rear caps and lens hood.

Key Features:

• Focal Length: 17–40mm – Ultra-wide to wide-angle versatility
• Maximum Aperture: f/4 – Constant across zoom range for consistent exposure
• Optical Design: 12 elements in 9 groups – Includes 3 aspherical and 1 Super UD element
• Focus Type: Ring-type USM – Fast, silent autofocus with full-time manual override
• Minimum Focus Distance: 0.28m – Great for dramatic wide-angle close-ups
• Diaphragm: 7 blades – Circular aperture for smooth background blur
• Filter Thread: 77mm – Accepts standard filters (UV, ND, CPL)
• Build: L-series construction – Dust and moisture resistant (with front filter)
• Compatibility: Canon EF mount – Works with full-frame and APS-C DSLRs
• Dimensions: Approx. 83.5 × 96.8mm
• Weight: Approx. 475g – Lightweight and travel-friendly

Included:

• Canon EF 17–40mm f/4L USM Lens
• Front and rear lens caps
• Canon EW-83E lens hood

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