Comparison of Nikon 14mm f/2.8D ED AF Nikkor and Tamron SP AF 14mm f/2.8 Aspherical IF

Attribute	Nikon 14mm f/2.8D ED AF Nikkor ×	Tamron SP AF 14mm f/2.8 Aspherical IF ×
Notes	Included Accessories: Soft case. Lens Hood: Built-in Flower type	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood, Case
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Closest Focus (m)	0.2	0.2
Magnification Ratio (x)	0.15	0.15
Length (mm)	84	89
Focus Details	Rear Focusing	Internal
APS Equivalent	21mm	1.5x: 21mm; 1.6x: 22.4mm
Type	Wide Prime	Wide Prime
Image Circle	35mm	35mm
Focal Length (mm)	14.00	14.00
Brand	Nikon	Tamron
Name	Nikon 14mm f/2.8D ED AF Nikkor	Tamron SP AF 14mm f/2.8 Aspherical IF
Weight (g)	670	661
Diagonal Angle of View (degree)	114.00	113.80
Diaphragm Blades	7	5
Diameter (mm)	86	87
Lens Construction	14 elements in 12 groups, including 1 ED and 2 aspherical elements	14 elements in 12 groups, including 2 hybrid aspherical elements