Comparison of Nikon 14-24mm f/2.8G IF-ED AF-S Nikkor and Sigma 14mm f/2.8 EX Aspherical HSM

Attribute	Nikon 14-24mm f/2.8G IF-ED AF-S Nikkor ×	Sigma 14mm f/2.8 EX Aspherical HSM ×
Magnification Ratio (x)	0.15	0.2
Notes	Integrated hood. Included Accessories: Semi-soft Case CL-M3	Available AF Mounts: [HSM version]: Sigma, Canon, Nikon; [w/o HSM]: Minolta, Pentax
Focus Details	Silent Wave Motor; Internal Focusing	Internal focus; HSM with full-time manual override
Closest Focus (m)	0.28	0.18
Lens Construction	14 elements in 11 groups, including 2 ED, 3 aspherical, and one Nano Crystal Coat element	14 elements in 10 groups, including 2 aspherical and 2 SLD elements
Length (mm)	131.5	91
Focal Length (mm)	14.00 - 24.00	14.00
Diagonal Angle of View (degree)	84.00 - 114.00	114.20
Brand	Nikon	Sigma
Image Circle	35mm	35mm
Name	Nikon 14-24mm f/2.8G IF-ED AF-S Nikkor	Sigma 14mm f/2.8 EX Aspherical HSM
Weight (g)	1000	630
Type	Wide Zoom	Wide Prime
Aperture (f)	2.80 - 22.00	2.80 - 22.00
APS Equivalent	21 - 36mm	1.5x: 21mm; 1.6x: 22.4mm
Diaphragm Blades Type	rounded	-
Diaphragm Blades	9	7
Zoom System	Rotary	-
Diameter (mm)	98	82