Comparison of Sigma 18-50mm f/2.8 EX DC and Sigma 24-60mm f/2.8 EX DG

Attribute	Sigma 24-60mm f/2.8 EX DG ×	Sigma 18-50mm f/2.8 EX DC ×
Filter Size (mm)	77	67
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax, Four-Thirds
Closest Focus (m)	0.38	0.28
Magnification Ratio (x)	0.17	0.2
Type	Standard Zoom	Standard Zoom
Length (mm)	87.2	84.1
APS Equivalent	1.5x: 36 - 90mm; 1.6x: 38.4 - 96mm	1.5x: 27 - 75mm; 1.6x: 28.8 - 80mm
Zoom System	Rotary with lock	Rotary, non-telescoping
Image Circle	35mm	Image Circle
Focal Length (mm)	24.00 - 60.00	18.00 - 50.00
Brand	Sigma	Sigma
Name	Sigma 24-60mm f/2.8 EX DG	Sigma 18-50mm f/2.8 EX DC
Weight (g)	550	445
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	7
Diagonal Angle of View (degree)	39.60 - 84.10	27.90 - 69.30
Lens Construction	16 elements in 15 groups, including 4 aspherical and 2 SLD elements	15 elements in 13 groups, including two aspherical elements and one Special Low Dispersion (SLD) lens
Diameter (mm)	83.6	74.1
Focus Details	Internal Focus	Internal focusing system