Comparison of Nikon 300mm f/2.8D ED-IF II AF-S Nikkor and Sigma APO 300mm ƒ/2.8 EX DG HSM

Attribute	Nikon 300mm f/2.8D ED-IF II AF-S Nikkor ×	Sigma APO 300mm ƒ/2.8 EX DG HSM ×
Aperture (f)	2.80 - 22.00	2.80 - 32.00
Filter Size (mm)	52	46
Notes	Included Accessories: CL-L1 Case, HK-26 Hood, LN-1 Strap, 52mm filter holder, Gel Filter Holder	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax
Closest Focus (m)	2.3	2.5
Magnification Ratio (x)	0.16	0.13
Type	Telephoto Prime	Telephoto Prime
Focus Details	Internal with Silent Wave motor; M/A switch	Internal; HSM with full-time manual override
APS Equivalent	450mm	1.5x: 450mm; 1.6x: 480mm
Diaphragm Blades	9	9
Image Circle	35mm	35mm
Focal Length (mm)	300.00	300.00
Brand	Nikon	Sigma
Name	Nikon 300mm f/2.8D ED-IF II AF-S Nikkor	Sigma APO 300mm ƒ/2.8 EX DG HSM
Weight (g)	2590	2400
Diagonal Angle of View (degree)	8.20	8.20
Length (mm)	269	214.5
Diameter (mm)	122	119
Lens Construction	11 elements in 8 groups, including 3 ED elements	11 elements in 9 groups, including 2 ELD elements