Comparison of Tokina 11-16mm f/2.8 AT-X 116 PRO DX and Tokina 11-20mm f/2.8 AT-X PRO DX SD

Attribute	Tokina 11-20mm f/2.8 AT-X PRO DX SD ×	Tokina 11-16mm f/2.8 AT-X 116 PRO DX ×
Filter Size (mm)	82	77
Notes	Available AF Mounts: Canon EF, Nikon F (lens has focus motor); Included Accessories: BH-821 Lens Hood	Available AF Mounts: Canon, Nikon and Sony APS-C digital only
Closest Focus (m)	0.28	0.3
Magnification Ratio (x)	0.12	0.09
Type	Wide Zoom	Wide Zoom
Length (mm)	92	89.2
APS Equivalent	1.5x: 16.5 - 30mm; 1.6x: 17.6 - 32mm	1.5x: 16.5 - 24mm; 1.6x: 17.6 - 25.6mm
Zoom System	Rotary	Rotary
Image Circle	APS-C	APS-C
Focal Length (mm)	11.00 - 20.00	11.00 - 16.00
Brand	Tokina	Tokina
Name	Tokina 11-20mm f/2.8 AT-X PRO DX SD	Tokina 11-16mm f/2.8 AT-X 116 PRO DX
Weight (g)	560	560
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	72.70 - 104.50	82.00 - 104.00
Lens Construction	14 elements in 12 groups, including 2 SD (Super-low Dispersion) and 3 aspheric elements	13 elements in 11 groups, including 2 SD (Super-low Dispersion) and 2 aspheric elements
Diameter (mm)	89	84
Focus Details	Internal with One-Touch Focus Clutch mechanism	Internal with One-Touch Focus Clutch mechanism