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Lens review

Canon EF 17-40 mm f/4.0L USM

22 September 2007
Robert Olech

2. Pictures and parameters

Pictures:
Parameters:
Manufacturer Canon
Model EF 17-40 mm f/4.0L USM
Lens style Wide angle zoom
Focal length 17 - 40 mm
Maximum aperture f/4
Angle of view 104 - 57.3 o
Closest focusing distance 0.28 m
Maximum magnification 1:4.1
Minimum aperture 22
Number of diaphragm blades 7
Auto focus type USM
Lens Construction 12 elements / 9 groups
Filter diameter 77 mm
Macro No
Available mounts Canon EF
Dimensions 83.5 x 96.8 mm
Weight 475 g
Additional information Marketed May 2003