Canon-EF-17-40mm-f-4 0-L-USM-Lens

EF 17-40mm Photo by

The EF 17-40mm f/4L USM lens is a wide-angle lens made by Canon.

The lens has an EF mount to work with the EOS line of cameras.


Attribute F/4L
Image stabilizer No
Ultrasonic Motor Yes
L-series Yes
Diffractive Optics No
Macro No
Maximum aperture f/4
Minimum aperture f/22
Weight 475g
Diameter 83.5 mm
Length 96.8 mm
Filter diameter 77 mm
Horizontal viewing angle 93° – 49° (36mm)
Diagonal viewing angle 104° – 57° (43.2mm)
Groups/elements 9/12
# of diaphragm blades 7 (circular aperture)
Closest focusing distance 0.28 m
MSRP ($) $850



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