Comparison of Canon EF 24-70mm ƒ/2.8L II USM and Nikon 17-55mm f/2.8G ED-IF AF-S DX Nikkor

Attribute	Canon EF 24-70mm ƒ/2.8L II USM ×	Nikon 17-55mm f/2.8G ED-IF AF-S DX Nikkor ×
Notes	Weather sealing protects against dust and moisture, while a fluorine-coated front and rear elements are easy to clean.	DX Nikkor for use with Nikon Digital SLR models only. Lens hood, case included.
Magnification Ratio (x)	0.21	0.2
Filter Size (mm)	82	77
Length (mm)	113	112
Closest Focus (m)	0.38	0.36
Diagonal Angle of View (degree)	34.00 - 84.00	28.80 - 79.80
Focus Details	Inner focusing; full-time manual focus and USM	Internal; AF-S "Silent Wave" motor
Focal Length (mm)	24.00 - 70.00	17.00 - 55.00
APS Equivalent	38 - 112mm	26 - 83mm
Brand	Canon	Nikon
Image Circle	35mm	APS-C
Name	Canon EF 24-70mm ƒ/2.8L II USM	Nikon 17-55mm f/2.8G ED-IF AF-S DX Nikkor
Weight (g)	805	764
Type	Standard Zoom	Standard Zoom
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	7
Diaphragm Blades Type	rounded	-
Lens Construction	18 elements in 13 groups, including 1 Super UD and 2 UD elements	14 elements in 10 groups, including 3 ED and 3 aspherical elements
Zoom System	Rotating, with zoom lock lever	Rotary
Diameter (mm)	88.5	86