Comparison of Sigma 24-70mm f/3.5-5.6 Aspherical HF and Sony 28-70mm f/3.5-5.6 OSS SEL2870

Attribute	Sigma 24-70mm f/3.5-5.6 Aspherical HF ×	Sony 28-70mm f/3.5-5.6 OSS SEL2870 ×
Aperture (f)	3.50 - 22.00	3.50 - 36.00
Filter Size (mm)	62	55
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Optical SteadyShot; Included Accessories: ALC-SH130 Petal Lens Hood
Closest Focus (m)	0.4	0.3
Magnification Ratio (x)	0.22	0.19
Diameter (mm)	69.5	72.5
Type	Standard Zoom	Standard Zoom
APS Equivalent	1.5x: 36 - 105mm; 1.6x: 38.4 - 112mm	42 - 105mm
Diaphragm Blades	8	7
Image Circle	35mm	35mm (Full-frame E-Mount)
Focal Length (mm)	24.00 - 70.00	28.00 - 70.00
Brand	Sigma	Sony
Name	Sigma 24-70mm f/3.5-5.6 Aspherical HF	Sony 28-70mm f/3.5-5.6 OSS SEL2870
Weight (g)	285	295
Diagonal Angle of View (degree)	34.30 - 84.10	34.00 - 75.00
Lens Construction	9 elements in 7 groups, including 3 aspherical elements	9 elements in 8 groups, including 3 aspheric and 1 extra-low dispersion element
Zoom System	Rotary	Rotary
Length (mm)	76.4	83
Diaphragm Blades Type	-	rounded
Focus Details	Helical Focusing	Linear motor