Comparison of Canon EF 16-35mm f/2.8L III USM and Nikon 17-35mm f/2.8D ED-IF AF-S Nikkor

Attribute	Canon EF 16-35mm f/2.8L III USM ×	Nikon 17-35mm f/2.8D ED-IF AF-S Nikkor ×
Notes	Image stabilization; dust and moisture resistant	Included Accessories: HB-23 Hood, CL-76 Case
Magnification Ratio (x)	0.22	0.22
Filter Size (mm)	82	77
Length (mm)	127.5	107
Closest Focus (m)	0.28	0.3
Diagonal Angle of View (degree)	63.00 - 108.20	62.00 - 104.00
Focus Details	Inner focusing; AF with USM, full-time manual focus	Internal; SWM with M/A switch for fast transitions between AF and MF
Focal Length (mm)	16.00 - 35.00	17.00 - 35.00
APS Equivalent	26 - 56mm	26 - 53mm
Brand	Canon	Nikon
Image Circle	35mm	35mm
Name	Canon EF 16-35mm f/2.8L III USM	Nikon 17-35mm f/2.8D ED-IF AF-S Nikkor
Weight (g)	790	746
Type	Wide Zoom	Wide Zoom
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	-
Lens Construction	16 elements in 11 groups, including 2 large-diameter double-surface GMo (glass-molded) elements, a ground aspherical element, and 2 UD elements	13 elements in 10 groups, including 3 aspherical and 2 ED elements
Zoom System	Rotary	Rotary
Diameter (mm)	88.5	81