Introduction | |
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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. | |
Lens system | |
Component for | SLR |
Lens type | Wide zoom lens |
Lens structure (elements/groups) | 12/9 |
Lens viewing angle, diagonal | 104 - 57.5° |
Focal length range | 17 - 40 mm |
Minimum aperture number | 4 |
Number of diaphragm blades | 7 |
Closest focusing distance | 0.28 m |
Maximum aperture number | 22 |
Lens mount interface | Canon EF |
Performance | |
Auto focus | Y |
Manual focus | Y |
AF actuator | USM |
Design | |
Product colour | Black |
Weight & dimensions | |
Length | 96.8 mm |
Weight | 500 g |
Diameter | 8.35 cm |
Filter size | 7.7 cm |
Other features | |
Magnification | 0.24x |
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