Comparison of Canon EF 16-35mm f/2.8L III USM and Sony 16-35mm f/2.8 ZA SSM II Zeiss Vario-Sonnar T* SAL1635Z2

Attribute	Canon EF 16-35mm f/2.8L III USM ×	Sony 16-35mm f/2.8 ZA SSM II Zeiss Vario-Sonnar T* SAL1635Z2 ×
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Filter Size (mm)	82	77
Notes	Image stabilization; dust and moisture resistant	For Sony A-Mount; Dust- and moisture-resistant; Included Accessories: ALC-SH106 lens hood
Closest Focus (m)	0.28	0.28
Magnification Ratio (x)	0.22	0.24
Zoom System	Rotary	Rotary
Type	Wide Zoom	Wide Zoom
APS Equivalent	26 - 56mm	24 - 52.5mm
Diaphragm Blades	9	9
Image Circle	35mm	35mm
Focal Length (mm)	16.00 - 35.00	16.00 - 35.00
Brand	Canon	Sony
Name	Canon EF 16-35mm f/2.8L III USM	Sony 16-35mm f/2.8 ZA SSM II Zeiss Vario-Sonnar T* SAL1635Z2
Weight (g)	790	872
Diaphragm Blades Type	rounded	circular
Lens Construction	16 elements in 11 groups, including 2 large-diameter double-surface GMo (glass-molded) elements, a ground aspherical element, and 2 UD elements	17 elements in 13 groups, including 1 ED, 1 Super ED and 3 aspherical elements; T* coating
Diagonal Angle of View (degree)	63.00 - 108.20	63.00 - 107.00
Length (mm)	127.5	114
Diameter (mm)	88.5	83
Focus Details	Inner focusing; AF with USM, full-time manual focus	Internal; SSM (Super Sonic wave Motor) with Focus Hold button and Auto Clutch; ~4x the subject tracking speed of the previous model