Comparison of Canon EF 200-400mm f/4L IS USM Extender 1.4X and Nikon 200-400mm f/4G ED-IF AF-S VR Nikkor

Attribute	Canon EF 200-400mm f/4L IS USM Extender 1.4X ×	Nikon 200-400mm f/4G ED-IF AF-S VR Nikkor ×
Notes	Built-in 1.4x extender (8 elements in 4 groups) switches to 280-560mm f/5.6 lens with 0.21x / 1.48 magnification ratio; 4-stop Image Stabilization	Image Stabilization; Included Accessories: HK-30 Hood, CL-L2 Soft Case, tripod mounting collar
Magnification Ratio (x)	0.15	0.27
Filter Size (mm)	52	52
Length (mm)	366	358
Closest Focus (m)	2	1.95
Diagonal Angle of View (degree)	6.20 - 12.00	6.20 - 12.30
Focus Details	Inner focusing; Full-time manual focus and ring USM; Ring USM, High-speed CPU and optimized AF algorithms; Power Focus mode; Focus Limiter	Internal; Silent Wave Motor
Focal Length (mm)	200.00 - 400.00	200.00 - 400.00
APS Equivalent	320 - 640mm	300 - 600mm
Brand	Canon	Nikon
Image Circle	35mm	35mm
Name	Canon EF 200-400mm f/4L IS USM Extender 1.4X	Nikon 200-400mm f/4G ED-IF AF-S VR Nikkor
Weight (g)	3620	3300
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	4.00 - 32.00	4.00 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	circular	-
Lens Construction	25 elements in 20 groups (incl. 1 rear filter); one fluorite and four UD lens elements	24 elements in 17 groups, including 4 ED elements
Zoom System	Rotating	Rotary
Diameter (mm)	128	124