Comparison of Sony 24-70mm f/2.8 ZA Carl Zeiss Vario Sonnar T* SAL-2470Z and Tamron SP 24-70mm f/2.8 Di VC USD G2 (Model A032)

Attribute	Tamron SP 24-70mm f/2.8 Di VC USD G2 (Model A032) ×	Sony 24-70mm f/2.8 ZA Carl Zeiss Vario Sonnar T* SAL-2470Z ×
Filter Size (mm)	82	77
Notes	VC image stabilization (up to 5 stops); Moisture-resistant construction; Available mounts: Canon EF, Nikon F; Includes locking petal type lens hood	Included Accessories: ALC-SH101 Petal Lens Hood
Closest Focus (m)	0.38	0.34
Magnification Ratio (x)	0.2	0.25
Diameter (mm)	88.4	83
Type	Standard Zoom	Standard Zoom
APS Equivalent	-	36 - 105mm
Diagonal Angle of View (degree)	34.30 - 84.00	34.00 - 84.00
Image Circle	Image Circle	35mm
Focal Length (mm)	24.00 - 70.00	24.00 - 70.00
Brand	Tamron	Sony
Name	Tamron SP 24-70mm f/2.8 Di VC USD G2 (Model A032)	Sony 24-70mm f/2.8 ZA Carl Zeiss Vario Sonnar T* SAL-2470Z
Weight (g)	905	955
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	17 elements in 12 groups, including 2 XR (Extra Refractive Index), 3 LD (Low Dispersion), 3 GM (Glass-Molded aspherical) and 1 hybrid aspherical lens	17 elements in 13 groups, including 2 aspheric and 2 extra-low dispersion elements
Zoom System	Rotary	Rotary
Length (mm)	111	111
35mm Equivalent	1.5x: 36 - 105mm; 1.6x: 38.4 - 112mm	-
Focus Details	Internal with USD (Ultrasonic Silent Drive), continuous manual mechanism; High performance MPU	Super Sonic wave Motor (SSM) with AF/MF switch and focus hold