Comparison of Nikon 600mm f/4D ED-IF II AF-S Nikkor and Tamron SP AF 300mm f/2.8 LD IF

Attribute	Nikon 600mm f/4D ED-IF II AF-S Nikkor ×	Tamron SP AF 300mm f/2.8 LD IF ×
Aperture (f)	4.00 - 22.00	2.80 - 32.00
Filter Size (mm)	52	43
Notes	Included Accessories: CT-606 Trunk Case, HK-29 Hood, LN-1 Strap, 52mm Filter Holder, Gel Holder	Available AF Mounts: Canon, Minolta, Nikon; Included Accessories: Lens Hood, Case
Closest Focus (m)	5.6	2.5
Magnification Ratio (x)	0.12	0.141
Type	Telephoto Prime	Telephoto Prime
Focus Details	Internal; Silent Wave motor; M/A switch	Internal; Focus ring slides back and forth to switch between AF and MF
APS Equivalent	900mm	1.5x: 450mm; 1.6x: 480mm
Diaphragm Blades	9	9
Image Circle	35mm	35mm
Focal Length (mm)	600.00	300.00
Brand	Nikon	Tamron
Name	Nikon 600mm f/4D ED-IF II AF-S Nikkor	Tamron SP AF 300mm f/2.8 LD IF
Weight (g)	4800	2800
Diagonal Angle of View (degree)	4.20	8.00
Length (mm)	432	215.9
Diameter (mm)	168	120
Lens Construction	10 elements in 7 groups, including 3 ED elements	10 elements in 7 groups, including 2 LD elements