Comparison of Sony 16-35mm f/2.8 ZA SSM II Zeiss Vario-Sonnar T* SAL1635Z2 and Tokina 14-20mm f/2 AT-X 142 AF PRO DX SD

Attribute	Sony 16-35mm f/2.8 ZA SSM II Zeiss Vario-Sonnar T* SAL1635Z2 ×	Tokina 14-20mm f/2 AT-X 142 AF PRO DX SD ×
Notes	For Sony A-Mount; Dust- and moisture-resistant; Included Accessories: ALC-SH106 lens hood	Available AF Mounts: Canon and Nikon Digital Only; Built-in AF motor for use with all Nikon DSLRs; Included Accessories: BH-823 Lens Hood
Magnification Ratio (x)	0.24	0.12
Filter Size (mm)	77	82
Length (mm)	114	106
Closest Focus (m)	0.28	0.28
Diagonal Angle of View (degree)	63.00 - 107.00	71.80 - 91.70
Focus Details	Internal; SSM (Super Sonic wave Motor) with Focus Hold button and Auto Clutch; ~4x the subject tracking speed of the previous model	Internal with One-Touch Focus Clutch mechanism
Focal Length (mm)	16.00 - 35.00	14.00 - 20.00
APS Equivalent	24 - 52.5mm	1.5x: 21 - 30mm; 1.6x: 22.4 - 32mm
Brand	Sony	Tokina
Image Circle	35mm	APS-C
Name	Sony 16-35mm f/2.8 ZA SSM II Zeiss Vario-Sonnar T* SAL1635Z2	Tokina 14-20mm f/2 AT-X 142 AF PRO DX SD
Weight (g)	872	725
Type	Wide Zoom	Wide Zoom
Aperture (f)	2.80 - 22.00	2.00 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	circular	-
Lens Construction	17 elements in 13 groups, including 1 ED, 1 Super ED and 3 aspherical elements; T* coating	13 elements in 11 groups, including 3 aspherical and 4 SD elements
Zoom System	Rotary	Rotary
Diameter (mm)	83	89