Comparison of Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM Contemporary and Tamron 18-200mm f/3.5-6.3 Di III VC

Attribute	Tamron 18-200mm f/3.5-6.3 Di III VC ×	Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM Contemporary ×
Aperture (f)	3.50 - 40.00	3.50 - 22.00
Filter Size (mm)	62	62
Notes	Mounts: Sony E, Canon EF-M. VC (Vibration Compensation) Image Stabilization. Included Accessories: Flower-shaped lens hood. Available in black or sil	Image Stabilization; Available OS AF mounts: Canon EF, Nikon F, Sigma SA; Non-OS AF mounts: Sony A, Pentax K
Closest Focus (m)	0.5	0.39
Magnification Ratio (x)	0.27	0.3
Zoom System	Rotary	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	1.5x: 27 - 300mm; 1.6x: 28.8 - 320mm	1.5x: 27 - 300mm; 1.6x: 28.8 - 320mm
Diaphragm Blades	7	7
Image Circle	APS-C	Image Circle
Focal Length (mm)	18.00 - 200.00	18.00 - 200.00
Brand	Tamron	Sigma
Name	Tamron 18-200mm f/3.5-6.3 Di III VC	Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM Contemporary
Weight (g)	460	430
Diaphragm Blades Type	rounded	rounded
Lens Construction	17 elements in 13 groups	16 elements in 13 groups, including SLD and aspherical elements
Diagonal Angle of View (degree)	8.00 - 76.20	8.10 - 76.50
Length (mm)	102	86
Diameter (mm)	68	70.7
Focus Details	Internal; Stepping motor adopted for the AF drive accommodates Contrast-detection AF and shooting video; Direct Manual Focus (DMF) function	Internal HSM (Hyper Sonic Motor) with AF/MF switch