Comparison of Olympus 11-22mm f/2.8-3.5 Zuiko Digital and Tokina 12-28mm f/4 AT-X 128 AF PRO DX

Attribute	Tokina 12-28mm f/4 AT-X 128 AF PRO DX ×	Olympus 11-22mm f/2.8-3.5 Zuiko Digital ×
Notes	Available AF Mounts: Canon and Nikon Digital Only. Built-in AF motor for use with all Nikon DSLRs. Included Accessories: Lens Hood	Includes Lens Hood (LH-75) and Lens Case (LSC-0918); Compatible with TC-14 Teleconverter
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Magnification Ratio (x)	0.2	0.13
Filter Size (mm)	77	72
Focus Details	Internal with One-Touch Focus Clutch mechanism; SD-M (Silent Drive-Module)	-
Type	Wide Zoom	Wide Zoom
Diaphragm Blades	9	7
Diameter (mm)	84	75
Image Circle	APS-C	Image Circle
Focal Length (mm)	12.00 - 28.00	11.00 - 22.00
Brand	Tokina	Olympus
Name	Tokina 12-28mm f/4 AT-X 128 AF PRO DX	Olympus 11-22mm f/2.8-3.5 Zuiko Digital
Weight (g)	530	485
Diagonal Angle of View (degree)	54.70 - 99.40	53.00 - 89.00
Lens Construction	14 elements in 12 groups, including 2 aspherical and 2 SD elements	12 elements in 10 groups, including 2 aspherical elements
Zoom System	Rotary	Rotary
Front Element Rotation	-	-
35mm Equivalent	-	22 - 44mm
Length (mm)	90.2	92.5
APS Equivalent	1.5x: 18 - 42mm;1.6x: 19.2 - 44.8mm	-
Closest Focus (m)	0.25	0.28