Comparison of Canon EF 400mm f/2.8L IS III USM and Nikon 500mm f/4D ED-IF II AF-S Nikkor

Attribute	Nikon 500mm f/4D ED-IF II AF-S Nikkor ×	Canon EF 400mm f/2.8L IS III USM ×
Magnification Ratio (x)	0.12	0.17
Filter Size (mm)	52	52
Focus Details	Internal; Silent Wave motor; M/A switch	Inner focusing; full-time manual focus and Ring USM; Customizable Electronic Focusing Ring; 2 Focus Presets;
Closest Focus (m)	4.9	2.5
Lens Construction	11 Elements in 9 groups, including 3 ED elements	17 elements in 13 groups, including 2 fluorite elements and one super UD element; Super Spectra Coating (SSC); Air Sphere Coating (ASC)
Length (mm)	396	343
Focal Length (mm)	500.00	400.00
Diaphragm Blades Type	-	circular
Brand	Nikon	Canon
Image Circle	35mm	35mm
Name	Nikon 500mm f/4D ED-IF II AF-S Nikkor	Canon EF 400mm f/2.8L IS III USM
Weight (g)	3400	2840
Type	Telephoto Prime	Telephoto Prime
Notes	Included Accessories: CT-502 Trunk Case, HK-28 Hood, LN-1 Strap, 52mm Filter Holder, Gel Holder	Image Stabilization (up to 5-stops of correction); Dust- and water-resistant construction; Detachable, rotatable tripod collar.
APS Equivalent	750mm	640mm
Aperture (f)	4.00 - 22.00	2.80 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	5.00	6.20
Diameter (mm)	140	163