Comparison of Sony FE 12-24mm f/2.8 GM and Tokina 16-28mm f/2.8 FF Opera

Attribute	Sony FE 12-24mm f/2.8 GM ×	Tokina 16-28mm f/2.8 FF Opera ×
Magnification Ratio (x)	0.14	0.19
Notes	Sony E-mount; Dust and moisture resistant; Includes built-in petal-shaped lens hood.	Available AF Mounts: Canon EF, Nikon F; Included Accessories: lens cap, fixed petal type hood.
Focus Details	Internal with 4 Extreme Dynamic (XD) linear motors; AF/MF switch; 1 Focus hold button (Programmable)	Internal with SD-M (Silent Drive Module) DC motor; One-Touch Focus Clutch Mechanism
Closest Focus (m)	0.28	0.28
Lens Construction	17 elements in 14 groups, including 3 XA (extreme aspherical) elements, 1 Aspherical elment, 2 Super ED elemente and 3 ED glass elements	15 elements in 13 groups, including 3 SD and 3 aspherical elements
Length (mm)	137	133.5
Focal Length (mm)	12.00 - 24.00	16.00 - 28.00
Diagonal Angle of View (degree)	84.00 - 122.00	76.90 - 107.10
Brand	Sony	Tokina
Image Circle	35mm (Full-frame E-Mount)	35mm
Name	Sony FE 12-24mm f/2.8 GM	Tokina 16-28mm f/2.8 FF Opera
Weight (g)	847	940
Type	Wide Zoom	Wide Zoom
Aperture (f)	2.80 - 22.00	2.80 - 22.00
APS Equivalent	18 - 36mm	1.5x: 24 - 42mm; 1.6x: 25.6 - 44.8mm
Diaphragm Blades Type	circular	-
Diaphragm Blades	9	9
Zoom System	Rotary	Rotary
Diameter (mm)	97.6	89