Comparison of Sigma 18-125mm f/3.8-5.6 DC OS HSM and Sigma 24-135mm f/2.8-4.5 Aspherical IF

Attribute	Sigma 24-135mm f/2.8-4.5 Aspherical IF ×	Sigma 18-125mm f/3.8-5.6 DC OS HSM ×
Filter Size (mm)	77	67
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Image Stabilization; Available AF mounts: Sigma, Canon, Nikon, Pentax, Sony
Closest Focus (m)	0.5	0.35
Magnification Ratio (x)	0.22	0.26
Type	Standard Zoom	Standard Zoom
Length (mm)	90.9	88.5
APS Equivalent	1.5x: 36 - 202.5mm; 1.6x: 38.4 - 216mm	1.5x: 27 - 188mm; 1.6x: 29 - 200mm
Zoom System	Rotary	Rotary
Image Circle	35mm	Image Circle
Focal Length (mm)	24.00 - 135.00	18.00 - 125.00
Brand	Sigma	Sigma
Name	Sigma 24-135mm f/2.8-4.5 Aspherical IF	Sigma 18-125mm f/3.8-5.6 DC OS HSM
Weight (g)	530	505
Aperture (f)	2.80 - 32.00	3.80 - 22.00
Diaphragm Blades	9	7
Diagonal Angle of View (degree)	18.20 - 84.10	11.40 - 69.30
Lens Construction	16 elements in 15 groups, including 2 aspherical and 1 SLD elements	16 elements in 12 groups, including SLD and aspherical elements
Diameter (mm)	83.6	74
Focus Details	Internal	Internal, with HSM