Canon EF 17-40mm f/4L USM Lens
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Product Information
The EF 17-40mm f/4L USM Lens is an ultra-wide-angle lens producing stunning clarity in a range of focal lengths. Its compact, lightweight body makes it an ideal travel companion - suited to interiors, architecture and landscapes, fitting more in the frame without the need to step back. Produce consistent exposures with the large f/4 aperture over the 17-40 mm zoom range and create softer background blur with a 7-blade circular aperture diaphragm. Part of the Canon professional L-series flagship range, its designed for robust handling and resistant to dust and moisture.
Product
Weight & dimensions
Diameter
8.35 cm
Filter size
77 mm
Length
96.8 mm
Weight
500 g
Lens system
Component for
SLR
Lens structure (elements/groups)
12/9
Lens type
Wide zoom lens
Minimum aperture number
4
Closest focusing distance
0.28 m
Maximum aperture number
22
Lens mount interface
Canon EF
Lens viewing angle, diagonal
104 - 57.5°
Focal length range
17 - 40 mm
Number of diaphragm blades
7
Other features
Magnification
0.24x
Design
Product colour
Black
Performance
Auto focus
Yes
Manual focus
Yes
AF actuator
USM
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