Comparison of Canon EF-S 17-85mm f/4-5.6 IS USM and Sony SAL-1680Z Carl Zeiss Vario-Sonnar T* DT 16-80mm f/3.5-4.5

Attribute	Canon EF-S 17-85mm f/4-5.6 IS USM ×	Sony SAL-1680Z Carl Zeiss Vario-Sonnar T* DT 16-80mm f/3.5-4.5 ×
Filter Size (mm)	67	62
Notes	EF-S lens mount, exclusively for EOS 20D, Digital Rebel, and newer bodies with APS-C sensors.	Included Accessories: SH005 Lens Hood
Closest Focus (m)	0.35	0.37
Magnification Ratio (x)	0.2	0.24
Type	Standard Zoom	Standard Zoom
Length (mm)	92	83
APS Equivalent	27 - 136mm	24 - 120mm
Zoom System	Rotary	Rotary
Image Circle	APS-C	APS-C
Focal Length (mm)	17.00 - 85.00	16.00 - 80.00
Brand	Canon	Sony
Name	Canon EF-S 17-85mm f/4-5.6 IS USM	Sony SAL-1680Z Carl Zeiss Vario-Sonnar T* DT 16-80mm f/3.5-4.5
Weight (g)	475	440
Aperture (f)	4.00 - 32.00	3.50 - 29.00
Diaphragm Blades	6	7
Diagonal Angle of View (degree)	18.40 - 78.50	20.00 - 83.00
Lens Construction	17 elements in 12 groups, including 1 aspherical element	14 elements in 10 groups, including 2 aspherical elements
Diameter (mm)	78	72
Focus Details	Inner focusing; full-time manual focus and USM	Internal; Auto Clutch