Comparison of Nikon 300mm ƒ/4E PF ED VR AF-S Nikkor and Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035)

Attribute	Nikon 300mm ƒ/4E PF ED VR AF-S Nikkor ×	Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035) ×
Aperture (f)	4.00 - 32.00	4.50 - 45.00
Filter Size (mm)	77	67
Notes	Image Stabilized (4.5 stops); Included Accessories: CL-M3 case, HB-73 hood, front and rear lens caps	Available mounts: Canon EF, Nikon F; Optical Image Stabiliztion (CIPA: 4 stops); Moisture-Resistant Construction
Closest Focus (m)	1.4	1.5
Magnification Ratio (x)	0.24	0.28
Diameter (mm)	89	86.2
Type	Telephoto Prime	Telephoto Zoom
APS Equivalent	450mm	1.5x: 150 - 600mm; 1.6x: 160 - 640mm
Diaphragm Blades	9	9
Image Circle	35mm	Image Circle
Focal Length (mm)	300.00	100.00 - 400.00
Brand	Nikon	Tamron
Name	Nikon 300mm ƒ/4E PF ED VR AF-S Nikkor	Tamron 100-400mm f/4.5-6.3 Di VC USD (Model A035)
Weight (g)	755	1135
Diaphragm Blades Type	rounded	circular
Lens Construction	16 elements in 10 groups; including 1 Aspherical, 1 PF (Phase Fresnel), and 1 ED element; Nano Crystal Coat	17 elements in 11 groups, including 3 LD (Low Dispersion) elements; eBAND coating; Fluorine coating
Diagonal Angle of View (degree)	8.20	6.20 - 24.40
Length (mm)	147.5	199
Zoom System	-	Rotary
Focus Details	Internal focusing with Silent Wave motor; A/M-M/A-M switch	Internal; USD (Ultrasonic Silent Drive) motor