Comparison of Sigma 18-125mm f/3.5-5.6 DC and Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro

Attribute	Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro ×	Sigma 18-125mm f/3.5-5.6 DC ×
Filter Size (mm)	62	62
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax, Four-Thirds
Closest Focus (m)	0.24	0.5
Magnification Ratio (x)	0.5	0.19
Type	Standard Zoom	Standard Zoom
Length (mm)	75	70
APS Equivalent	1.5x: 42 - 202.5mm; 1.6x: 44.8 - 216mm	1.5x: 27 - 187.5mm; 1.6x: 28.8 - 200mm
Zoom System	Rotary	Rotary
Image Circle	35mm	Image Circle
Focal Length (mm)	28.00 - 135.00	18.00 - 125.00
Brand	Sigma	Sigma
Name	Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro	Sigma 18-125mm f/3.5-5.6 DC
Weight (g)	410	385
Aperture (f)	3.80 - 22.00	3.50 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	18.20 - 75.40	11.40 - 69.30
Lens Construction	13 elements in 12 groups, including 1 aspherical element	15 elements in 14 groups, including two aspherical elements and one Special Low Dispersion (SLD) lens
Diameter (mm)	75	77.7
Focus Details	Internal	Inner focusing system