Comparison of Olympus 70-300mm ƒ/4-5.6 ED Zuiko Digital and Sigma 70-300mm f/4-5.6 DG OS

Attribute	Olympus 70-300mm ƒ/4-5.6 ED Zuiko Digital ×	Sigma 70-300mm f/4-5.6 DG OS ×
Notes	Included Accessores: Lens Hood	Image Stabilization. Available AF Mounts: Sigma, Canon, Nikon, Pentax, Sony. For Pentax and Sony mount, when the OS function of lens body is used, pl
Magnification Ratio (x)	0.5	0.26
Filter Size (mm)	58	62
Front Element Rotation	-	-
Closest Focus (m)	1.2	1.5
Zoom System	Rotary	Rotary
APS Equivalent	-	1.5x: 105 - 450mm;1.6x: 112 - 480mm
Focal Length (mm)	70.00 - 300.00	70.00 - 300.00
Diaphragm Blades	9	9
Brand	Olympus	Sigma
Image Circle	Four-Thirds	35mm
Name	Olympus 70-300mm ƒ/4-5.6 ED Zuiko Digital	Sigma 70-300mm f/4-5.6 DG OS
Weight (g)	620	610
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	4.00 - 22.00	4.00 - 22.00
Lens Construction	14 elements in 10 groups, including 3 ED elements	16 elements in 11 groups, including 1 SLD element
Diagonal Angle of View (degree)	4.10 - 18.00	-
Focus Details	AF or MF	-
Diameter (mm)	80	76.5
Length (mm)	127	126.5
Diaphragm Blades Type	-	rounded
35mm Equivalent	140 - 600mm	-