Canon EF 17- 40 mm f/4 USM L
Minden gyári tartozékkal
Optical construction 12 elements in 9 groups inc.
3x aspherical and 1x SUD elements
Number of aperture blades 7 (circular)
min. focus distance 0.28 m (max. magnification
ratio ~1:4 @ 40 mm)
Dimensions 84 x 97 mm
Weight 475 g
Filter size 77 mm (non-rotating)
Hood included, petal-shaped
Other features gel filter slot (rear), sealing