Comparison of Canon EF 28mm ƒ/2.8 IS USM and Nikon 28mm f/2.8 AIS Nikkor

Attribute	Canon EF 28mm ƒ/2.8 IS USM ×	Nikon 28mm f/2.8 AIS Nikkor ×
Magnification Ratio (x)	0.2	0.26
Filter Size (mm)	58	52
Focus Details	Rear-focusing; USM with full-time manual-focus override	Manual Focus Only; Close Range Correction
Closest Focus (m)	0.23	0.2
Lens Construction	9 elements in 7 groups, including aspherical lens elements	8 elements in 8 groups
Length (mm)	51.5	45.7
Focal Length (mm)	28.00	28.00
Diaphragm Blades Type	circular	-
Brand	Canon	Nikon
Image Circle	35mm	35mm (FX)
Name	Canon EF 28mm ƒ/2.8 IS USM	Nikon 28mm f/2.8 AIS Nikkor
Weight (g)	260	249
Type	Wide Prime	Wide Prime
Notes	Image Stabilizer (up to 4-stops of correction).	Classic Nikon F Mount; AIS / AI / NAI Metering Compatibility; Includes front and rear lens caps.
APS Equivalent	45mm	42mm
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	75.00	74.00
Diameter (mm)	68.4	63.5