Attribute | Value |
Lens Construction | 12 elements in 9 groups, including 3 aspherical elements and 1 S-UD element |
Diameter | 83.5 mm |
Zoom System | Rotary |
Diagonal Angle of View | 57.50 - 104.00 degree |
Aperture | 4.00 - 22.00 f |
Notes | Dust and moisture resistant |
Filter Size | 77 mm |
Magnification Ratio | 0.24 x |
Closest Focus | 0.28 m |
Focus Details | Inner focusing; full-time manual focus and USM; |
Length | 96.8 mm |
Diaphragm Blades | 7 |
APS Equivalent | 27 - 64mm |
Focal Length | 17.00 - 40.00 mm |
Image Circle | 35mm |
Brand | Canon |
Name | Canon EF 17-40mm f/4L USM |
Weight | 500 g |
Type | Wide Zoom |
35mm Equivalent | Add |
Effective Reduction in Aperture | Add |
Focal Length Multiplier | Add |
APS-C Equivalent | Add |
Diaphragm Blades Type | Add |
Front Element Rotation | Add |