Comparison of Sigma 28-105mm f/2.8-4 DG and Sony SAL-24105 24-105mm f/3.5-4.5

Attribute	Sigma 28-105mm f/2.8-4 DG ×	Sony SAL-24105 24-105mm f/3.5-4.5 ×
Filter Size (mm)	72	62
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Included Accessories: SH0016 Lens Hood
Closest Focus (m)	0.5	0.5
Magnification Ratio (x)	0.18	0.18
Type	Standard Zoom	Standard Zoom
Length (mm)	81	69
APS Equivalent	1.5x: 42 - 157.5mm; 1.6x: 44.8 - 168mm	36 - 157.5mm
Zoom System	Rotary	Rotary
Image Circle	35mm	35mm
Focal Length (mm)	28.00 - 105.00	24.00 - 105.00
Brand	Sigma	Sony
Name	Sigma 28-105mm f/2.8-4 DG	Sony SAL-24105 24-105mm f/3.5-4.5
Weight (g)	405	395
Aperture (f)	2.80 - 22.00	3.50 - 27.00
Diaphragm Blades	8	7
Diagonal Angle of View (degree)	23.30 - 75.40	23.00 - 84.00
Lens Construction	12 elements in 11 groups, including 1 aspherical element	12 elements in 11 groups, including 2 aspherical elements
Diameter (mm)	77	71
Focus Details	Internal focusing	Auto Clutch