Comparison of Canon EF 300mm f/4L IS USM and Nikon 180mm f/2.8D ED-IF AF Nikkor

Attribute	Canon EF 300mm f/4L IS USM ×	Nikon 180mm f/2.8D ED-IF AF Nikkor ×
Filter Size (mm)	77	72
Notes	Image Stabilization	Lens Hood: Built-in; Includes CI-38 Case
Closest Focus (m)	1.5	1.5
Magnification Ratio (x)	0.24	0.15
Type	Telephoto Prime	Telephoto Prime
Focus Details	Inner focusing; full-time manual focus and USM	Internal
APS Equivalent	480mm	270mm
Diameter (mm)	90	79
Image Circle	35mm	35mm
Focal Length (mm)	300.00	180.00
Brand	Canon	Nikon
Name	Canon EF 300mm f/4L IS USM	Nikon 180mm f/2.8D ED-IF AF Nikkor
Weight (g)	1190	768
Aperture (f)	4.00 - 32.00	2.80 - 22.00
Diaphragm Blades	8	9
Diagonal Angle of View (degree)	8.30	14.00
Length (mm)	221	145
Zoom System	-	n/a
Lens Construction	15 elements in 11 groups, including 2 UD elements	8 elements in 6 groups, including 1 ED element