Comparison of Nikon 24-85mm f/2.8-4D IF AF Nikkor and Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical IF

Attribute	Nikon 24-85mm f/2.8-4D IF AF Nikkor ×	Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical IF ×
Filter Size (mm)	72	67
Notes	Included Accessories: HB-25 Hood	Available mounts: Canon, Minolta-D, Nikon-D, Pentax; Includes petal type lens hood.
Closest Focus (m)	0.21	0.33
Magnification Ratio (x)	0.5	0.26
Type	Standard Zoom	Standard Zoom
Length (mm)	81	92
APS Equivalent	36 - 127mm	1.5x: 42 - 112.5mm; 1.6x: 44.8 - 120mm
Zoom System	Rotary	Rotary, telescoping
Image Circle	35mm	Image Circle
Focal Length (mm)	24.00 - 85.00	28.00 - 75.00
Brand	Nikon	Tamron
Name	Nikon 24-85mm f/2.8-4D IF AF Nikkor	Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical IF
Weight (g)	544	510
Aperture (f)	2.80 - 22.00	2.80 - 32.00
Diaphragm Blades	9	7
Diagonal Angle of View (degree)	28.50 - 84.50	32.00 - 75.00
Lens Construction	15 elements in 11 groups, including 2 aspherical elements	16 elements in 14 groups, including one Extra Refractive Index element, four Aspherical elements and three Low Dispersion elements
Diameter (mm)	79	73
Focus Details	Internal	Internal