Canon EF 17-40mm F/4 L USM

Specifications01

MountCANON EF

Focal length17-40mm

Max aperturef/4

TypeZoom

Weight475 g

Filter size77 mm

Physical length96.8 mm

Min focus distance0.28 m

Sensor coverage43.3 mm

Additional Info02

SpecialL USM

Field Notes02

Canon EF 17–40mm f/4L USM is a standard-to-wide zoom for Canon EF-mount cameras, useful for general photography and landscapes with a constant f/4 aperture.

AI-assisted summary — verify against linked sources

Catalog note · source: cined

Sources03

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Other Mounts03

No alternate mounts are indexed for this family yet.