*READ* Canon Zoom Lens EF 17-40mm F4 L USM

• Lens Type: Ultra Wide-Angle Zoom Lens
• Mount: Canon EF Mount
• Format: Full Frame (compatible with APS-C)
• Focal Length: 17–40mm
• Aperture: f/4 (constant)
• Optical Design: 12 elements in 9 groups
• Diaphragm: 7-blade
• Focus Type: Autofocus (Ring-type USM, Full-time Manual Override)
• Minimum Focus Distance: 0.28 m
• Maximum Magnification: 0.24x
• Filter Size: 77 mm
• Image Stabilization: No
• Weight: Approx. 475 g

Description
The Canon EF 17-40mm f/4L USM is a classic ultra-wide zoom from Canon’s L-series lineup, built for photographers who need reliable wide-angle coverage with professional-grade construction. Covering 17–40mm, it’s well-suited for landscapes, architecture, interiors, and travel photography where expansive framing is essential.

Its constant f/4 aperture provides consistent exposure across the zoom range, while the ring-type USM ensures fast, silent, and precise autofocus. The lens also features weather-resistant construction (when paired with a sealed body), making it dependable for outdoor use. Optical performance emphasizes strong contrast and color typical of L-series lenses, with best results achieved when stopped down—especially for landscape work.

Lightweight for an L lens and highly practical, the 17-40mm remains a popular choice for photographers looking for an affordable entry into Canon’s professional ultra-wide zoom range.

Serial Number: 114537
SKU: UN-112-9836

Condition:
- Lens: Fully functional.
- Lens optics: No fungus, slight haze, and some dust.
- Lens body: Moderate scratches; zoom ring is slightly loose.
- Accessories: Front and rear lens caps and filter included.

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