Comparison of Tamron SP 15-30mm ƒ/2.8 Di VC USD (Model A012) and Tokina 16-28mm f/2.8 FF Opera

Attribute	Tamron SP 15-30mm ƒ/2.8 Di VC USD (Model A012) ×	Tokina 16-28mm f/2.8 FF Opera ×
Magnification Ratio (x)	0.2	0.19
Notes	VC Image Stabilization; Available AF mounts: Canon EF, Nikon F, Sony A. Integrated petal type lens hood.	Available AF Mounts: Canon EF, Nikon F; Included Accessories: lens cap, fixed petal type hood.
Focus Details	Ultrasonic Silent Drive USD motor with full-time MF mechanism	Internal with SD-M (Silent Drive Module) DC motor; One-Touch Focus Clutch Mechanism
Closest Focus (m)	0.28	0.28
Lens Construction	18 elements in 13 groups, including XGM (eXpanded Glass Molded) aspherical and several LD elements; BBAR (Broad-Band Anti-Reflection) coating	15 elements in 13 groups, including 3 SD and 3 aspherical elements
Length (mm)	145	133.5
Focal Length (mm)	15.00 - 30.00	16.00 - 28.00
Diagonal Angle of View (degree)	71.60 - 110.50	76.90 - 107.10
Brand	Tamron	Tokina
Image Circle	Image Circle	35mm
Name	Tamron SP 15-30mm ƒ/2.8 Di VC USD (Model A012)	Tokina 16-28mm f/2.8 FF Opera
Weight (g)	1100	940
Type	Wide Zoom	Wide Zoom
Aperture (f)	2.80 - 22.00	2.80 - 22.00
APS Equivalent	1.5x: 22.5 - 45mm; 1.6x: 24 - 48mm	1.5x: 24 - 42mm; 1.6x: 25.6 - 44.8mm
Diaphragm Blades Type	circular	-
Diaphragm Blades	9	9
Zoom System	Rotating	Rotary
Diameter (mm)	98.4	89