Comparison of Sony SAL-1680Z Carl Zeiss Vario-Sonnar T* DT 16-80mm f/3.5-4.5 and Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical IF

Attribute	Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical IF ×	Sony SAL-1680Z Carl Zeiss Vario-Sonnar T* DT 16-80mm f/3.5-4.5 ×
Filter Size (mm)	67	62
Notes	Available mounts: Canon, Minolta-D, Nikon-D, Pentax; Includes petal type lens hood.	Included Accessories: SH005 Lens Hood
Closest Focus (m)	0.33	0.37
Magnification Ratio (x)	0.26	0.24
Type	Standard Zoom	Standard Zoom
Length (mm)	92	83
APS Equivalent	1.5x: 42 - 112.5mm; 1.6x: 44.8 - 120mm	24 - 120mm
Zoom System	Rotary, telescoping	Rotary
Image Circle	Image Circle	APS-C
Focal Length (mm)	28.00 - 75.00	16.00 - 80.00
Brand	Tamron	Sony
Name	Tamron SP AF 28-75mm f/2.8 XR Di LD Aspherical IF	Sony SAL-1680Z Carl Zeiss Vario-Sonnar T* DT 16-80mm f/3.5-4.5
Weight (g)	510	440
Aperture (f)	2.80 - 32.00	3.50 - 29.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	32.00 - 75.00	20.00 - 83.00
Lens Construction	16 elements in 14 groups, including one Extra Refractive Index element, four Aspherical elements and three Low Dispersion elements	14 elements in 10 groups, including 2 aspherical elements
Diameter (mm)	73	72
Focus Details	Internal	Internal; Auto Clutch