Comparison of Sigma 24-70mm f/2.8 DG DN Art and Sony FE 24-70mm f/2.8 GM SEL2470GM

Attribute	Sigma 24-70mm f/2.8 DG DN Art ×	Sony FE 24-70mm f/2.8 GM SEL2470GM ×
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	Dust and moisture resistant; Included Accessories: Hood (ALC-SH141), Lens front cap (ALC-F82S), Lens rear cap (ALC-R1EM), Case
Closest Focus (m)	0.18	0.38
Magnification Ratio (x)	0.34	0.24
Zoom System	Rotary (with zoom lock)	Rotary with zoom lock
Type	Standard Zoom	Standard Zoom
APS Equivalent	36 - 105mm	36 - 105mm
Diaphragm Blades	11	9
Image Circle	35mm	35mm (Full-frame E-Mount)
Focal Length (mm)	24.00 - 70.00	24.00 - 70.00
Brand	Sigma	Sony
Name	Sigma 24-70mm f/2.8 DG DN Art	Sony FE 24-70mm f/2.8 GM SEL2470GM
Weight (g)	835	886
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.	18 elements in 13 groups, including 1 ED (Extra-low-Dispersion), 1 Super ED, and 1 XA (eXtreme Aspherical) elements; Nano AR Coating
Diagonal Angle of View (degree)	34.30 - 84.10	34.00 - 84.00
Length (mm)	122.9	136
Diameter (mm)	87.8	87.6
Focus Details	Internal focus with stepping motor; AF/MF switch; AFL button	Direct Drive Super Sonic wave Motor (DDSSM) system with AF/MF switch