Comparison of Nikon 18-35mm f/3.5-4.5D ED-IF AF Nikkor and Tokina 19-35mm f/3.5-4.5 AF 193

Attribute	Nikon 18-35mm f/3.5-4.5D ED-IF AF Nikkor ×	Tokina 19-35mm f/3.5-4.5 AF 193 ×
Magnification Ratio (x)	0.15	-
Filter Size (mm)	77	77
Focus Details	Internal	Internal
Closest Focus (m)	0.33	0.25
Lens Construction	11 elements in 8 groups, including 1 aspherical and 1 ED element	13 elements in 11 groups
Length (mm)	84	80
Focal Length (mm)	18.00 - 35.00	19.00 - 35.00
Diagonal Angle of View (degree)	62.00 - 100.00	63.50 - 98.70
Brand	Nikon	Tokina
Image Circle	35mm	35mm
Name	Nikon 18-35mm f/3.5-4.5D ED-IF AF Nikkor	Tokina 19-35mm f/3.5-4.5 AF 193
Weight (g)	369	390
Type	Wide Zoom	Wide Zoom
Notes	Included Accessories: HB-23 Hood	Available AF Mounts: Canon, Minolta, Nikon, Pentax
APS Equivalent	27 - 52mm	1.5x: 28.5 - 52.5mm; 1.6x: 30.4 - 56mm
Aperture (f)	3.50 - 22.00	3.50 - 22.00
Diaphragm Blades	7	6
Zoom System	Rotary	Rotary; Internal
Diameter (mm)	81	82