Comparison of Canon EF 800mm f/5.6L IS USM and Nikon 180-400mm f/4E TC1.4 FL ED VR Nikkor

Attribute	Canon EF 800mm f/5.6L IS USM ×	Nikon 180-400mm f/4E TC1.4 FL ED VR Nikkor ×
Notes	Image Stabilization	Built-in 1.4x Teleconverter; VR Image Stabilization up to 4 stops; Sealed against dust and moisture.
Aperture (f)	5.60 - 32.00	4.00 - 45.00
Magnification Ratio (x)	0.14	0.25
Filter Size (mm)	52	5
APS Equivalent	-	270 - 600mm (378 - 840mm with built-in TC engaged)
Type	Telephoto Prime	Telephoto Zoom
Diaphragm Blades	8	9
Diameter (mm)	162	128
Image Circle	35mm	35mm
Focal Length (mm)	800.00	180.00 - 400.00
Brand	Canon	Nikon
Name	Canon EF 800mm f/5.6L IS USM	Nikon 180-400mm f/4E TC1.4 FL ED VR Nikkor
Weight (g)	4500	3500
Diaphragm Blades Type	circular	rounded
Lens Construction	18 elements in 14 groups, including 1 UD, 1 Super-UD-glass and 2 fluorite elements	27 elements in 19 groups, including 1 Fluorite element and 8 ED elements; Nano Crystal Coat; Super Integrated Coating
Diagonal Angle of View (degree)	3.08	6.20 - 13.40
Focus Details	Internal focusing; full-time manual focus and USM	Internal SWM (AF-S); AF Recall Mode; Focus Range Limiter (2m to infinity (Full) or 6m to infinity); A/M, M/A, M Mode Switch
APS-C Equivalent	1280mm	-
Length (mm)	461	362.5
Zoom System	-	Rotary
Closest Focus (m)	6	2