Comparison of Olympus 14-54mm f/2.8-3.5 II Zuiko Digital and Sigma 18-50mm ƒ/2.8 EX DC Macro

Attribute	Sigma 18-50mm ƒ/2.8 EX DC Macro ×	Olympus 14-54mm f/2.8-3.5 II Zuiko Digital ×
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades Type	-	rounded
Filter Size (mm)	72	67
Notes	Available AF Mounts: Sigma, Canon, Nikon, Sony, Pentax, Four-Thirds	Includes Lens Hood and Case; Compatible with High-Speed Imager AF for Live View contrast-detect AF
Focus Details	Internal focusing system	-
Type	Standard Zoom	Standard Zoom
Diaphragm Blades	7	7
Diameter (mm)	79	75
Image Circle	Image Circle	Image Circle
Focal Length (mm)	18.00 - 50.00	14.00 - 54.00
Brand	Sigma	Olympus
Name	Sigma 18-50mm ƒ/2.8 EX DC Macro	Olympus 14-54mm f/2.8-3.5 II Zuiko Digital
Weight (g)	450	440
Diagonal Angle of View (degree)	27.90 - 69.30	23.00 - 75.00
Lens Construction	15 elements in 13 groups, including aspherical and Special Low Dispersion (SLD) elementss	15 elements in 11 groups, including 3 asperical elements
Zoom System	Rotary, non-telescoping	Rotary
Closest Focus (m)	0.2	0.22
35mm Equivalent	-	28 - 108mm
Length (mm)	85.8	89
APS Equivalent	1.5x: 27 - 75mm; 1.6x: 28.8 - 80mm	-
Magnification Ratio (x)	0.33	0.26