Comparison of Nikon 85mm ƒ/3.5G ED VR AF-S DX Micro Nikkor and Tamron SP AF 90mm f/2.8 Di Macro 1:1

Attribute	Tamron SP AF 90mm f/2.8 Di Macro 1:1 ×	Nikon 85mm ƒ/3.5G ED VR AF-S DX Micro Nikkor ×
Magnification Ratio (x)	1	1
Filter Size (mm)	55	52
Focus Details	External focus system, lens length varies while focusing	Internal; AF-S with Silent Wave Motor (SWM), M/A focus switch
Closest Focus (m)	0.29	0.29
Lens Construction	10 elements in 9 groups	14 elements in 10 groups (1 ED element)
Length (mm)	97	98.5
Focal Length (mm)	90.00	85.00
Diaphragm Blades Type	-	rounded
Brand	Tamron	Nikon
Image Circle	Image Circle	APS-C
Name	Tamron SP AF 90mm f/2.8 Di Macro 1:1	Nikon 85mm ƒ/3.5G ED VR AF-S DX Micro Nikkor
Weight (g)	405	355
Type	Telephoto Prime Macro	Telephoto Prime Macro
Notes	Available mounts: Canon, Minolta, Nikon, Pentax; Includes lens hood and case.	VR II Image Stabilization. Included Accessories: Bayonet Lens Hood (HB-37), Flexible Lens Pouch (CL-1018)
APS Equivalent	1.5x: 135mm; 1.6x: 144mm	128mm
Aperture (f)	2.80 - 32.00	3.50 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	27.00	18.83
Diameter (mm)	71.5	73