Comparison of Nikon 180-400mm f/4E TC1.4 FL ED VR Nikkor and Sigma APO 800mm f/5.6 EX DG HSM

Attribute	Sigma APO 800mm f/5.6 EX DG HSM ×	Nikon 180-400mm f/4E TC1.4 FL ED VR Nikkor ×
Notes	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax	Built-in 1.4x Teleconverter; VR Image Stabilization up to 4 stops; Sealed against dust and moisture.
Magnification Ratio (x)	0.11	0.25
Filter Size (mm)	46	5
Length (mm)	520	362.5
Closest Focus (m)	7	2
Diagonal Angle of View (degree)	3.10	6.20 - 13.40
Focus Details	Internal; HSM with full-time manual override	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
Focal Length (mm)	800.00	180.00 - 400.00
APS Equivalent	1.5x: 1200mm; 1.6x: 1280mm	270 - 600mm (378 - 840mm with built-in TC engaged)
Brand	Sigma	Nikon
Image Circle	35mm	35mm
Name	Sigma APO 800mm f/5.6 EX DG HSM	Nikon 180-400mm f/4E TC1.4 FL ED VR Nikkor
Weight (g)	4740	3500
Type	Telephoto Prime	Telephoto Zoom
Aperture (f)	5.60 - 32.00	4.00 - 45.00
Diaphragm Blades	9	9
Diaphragm Blades Type	-	rounded
Lens Construction	13 elements in 10 groups, including 2 ELD elements	27 elements in 19 groups, including 1 Fluorite element and 8 ED elements; Nano Crystal Coat; Super Integrated Coating
Zoom System	-	Rotary
Diameter (mm)	156.5	128