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

Attribute	Nikon 600mm f/4G IF-ED AF-S VR Nikkor ×	Tamron SP AF 300mm f/2.8 LD IF ×
Notes	Image Stabilization	Available AF Mounts: Canon, Minolta, Nikon; Included Accessories: Lens Hood, Case
Magnification Ratio (x)	0.135	0.141
Filter Size (mm)	52	43
Length (mm)	445	215.9
Closest Focus (m)	5	2.5
Diagonal Angle of View (degree)	4.20	8.00
Focus Details	Internal; Silent Wave Motor; M/A switch	Internal; Focus ring slides back and forth to switch between AF and MF
Focal Length (mm)	600.00	300.00
APS Equivalent	900mm	1.5x: 450mm; 1.6x: 480mm
Brand	Nikon	Tamron
Image Circle	35mm	35mm
Name	Nikon 600mm f/4G IF-ED AF-S VR Nikkor	Tamron SP AF 300mm f/2.8 LD IF
Weight (g)	5060	2800
Type	Telephoto Prime	Telephoto Prime
Aperture (f)	4.00 - 22.00	2.80 - 32.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	-
Lens Construction	15 elements in 12 groups, including 3 ED glass elements, one Nano Crystal Coat and one meniscus protective glass element	10 elements in 7 groups, including 2 LD elements
Zoom System	n/a	-
Diameter (mm)	166	120