Comparison of Tamron SP 15-30mm f/2.8 Di VC USD G2 (Model A041) and Tokina 16-28mm f/2.8 FF Opera

Attribute	Tamron SP 15-30mm f/2.8 Di VC USD G2 (Model A041) ×	Tokina 16-28mm f/2.8 FF Opera ×
Magnification Ratio (x)	0.2	0.19
Notes	VC Image Stabilization (4.5 stops); Available AF mounts: Canon EF, Nikon F. Integrated flower-shaped hood.	Available AF Mounts: Canon EF, Nikon F; Included Accessories: lens cap, fixed petal type hood.
Focus Details	Internal focusing; Ultrasonic Silent Drive USD motor with full-time MF mechanism; Dual MPU (Micro-Processing Unit) system	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 2 molded glass aspherical elements, 1 XGM (eXpanded Glass Molded) aspherical element and 3 LD elements	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 f/2.8 Di VC USD G2 (Model A041)	Tokina 16-28mm f/2.8 FF Opera
Weight (g)	1110	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