Comparison of Sigma 24-70mm f/2.8 DG DN Art and Tamron SP 24-70mm ƒ/2.8 Di VC USD (Model A007)

Attribute	Sigma 24-70mm f/2.8 DG DN Art ×	Tamron SP 24-70mm ƒ/2.8 Di VC USD (Model A007) ×
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Filter Size (mm)	82	82
Notes	Available AF Mounts: L-Mount, E-Mount; Mount with dust- and splash-proof design	VC image stabilization. Available mounts: Canon, Nikon, Sony. Includes petal type lens hood.
Closest Focus (m)	0.18	0.38
Magnification Ratio (x)	0.34	0.2
Zoom System	Rotary (with zoom lock)	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	36 - 105mm	1.5x: 36 - 105mm; 1.6x: 38.4 - 112mm
Diaphragm Blades	11	9
Image Circle	35mm	Image Circle
Focal Length (mm)	24.00 - 70.00	24.00 - 70.00
Brand	Sigma	Tamron
Name	Sigma 24-70mm f/2.8 DG DN Art	Tamron SP 24-70mm ƒ/2.8 Di VC USD (Model A007)
Weight (g)	835	825
Diaphragm Blades Type	rounded	rounded
Lens Construction	19 elements in 15 groups, including 6 FLD, 2 SLD and 3 aspherical elements; Super Multi-Layer Coating, Nano Porous Coating.	17 elements in 12 groups, including 3 LD, 3 glass-molded aspherical, 1 hybrid aspherical and 2 XR (Extra Refractive Index) elements
Diagonal Angle of View (degree)	34.30 - 84.10	34.30 - 84.00
Length (mm)	122.9	116.9
Diameter (mm)	87.8	88.2
Focus Details	Internal focus with stepping motor; AF/MF switch; AFL button	Internal with USD (Ultrasonic Silent Drive), continuous manual mechanism