Comparison of Olympus 40-150mm f/3.5-4.5 Zuiko Digital and Sigma 18-200mm f/3.5-6.3 II DC OS HSM

Attribute	Olympus 40-150mm f/3.5-4.5 Zuiko Digital ×	Sigma 18-200mm f/3.5-6.3 II DC OS HSM ×
Diagonal Angle of View (degree)	8.20 - 30.00	7.10 - 69.30
Notes	Includes Lens Hood (LH-61B); Compatible with TC-14 Teleconverter and EX-25 Extension Tube	Image Stabilization (up to 4 stops); Available OS AF mounts: Sigma, Canon, Nikon; Non-OS AF mounts: Sony, Pentax. Includes petal-type lens hood.
Aperture (f)	3.50 - 22.00	3.50 - 22.00
Type	Telephoto Zoom	Standard Zoom
Filter Size (mm)	58	62
35mm Equivalent	80 - 300mm	-
APS Equivalent	-	1.5x: 27 - 300mm; 1.6x: 28.8 - 320mm
Diaphragm Blades	7	7
Lens Construction	13 elements in 10 groups	18 elements in 14 groups, including 1 FLD, 2 SLD and 2 aspherical elements
Image Circle	Image Circle	Image Circle
Focal Length (mm)	40.00 - 150.00	18.00 - 200.00
Brand	Olympus	Sigma
Name	Olympus 40-150mm f/3.5-4.5 Zuiko Digital	Sigma 18-200mm f/3.5-6.3 II DC OS HSM
Weight (g)	425	490
Zoom System	Rotary	Rotary
Front Element Rotation	-	-
Diameter (mm)	77	75.3
Length (mm)	107	87.7
Focus Details	-	Internal HSM (Hyper Sonic Motor) with AF/MF switch
Magnification Ratio (x)	0.12	0.26
Diaphragm Blades Type	-	rounded
Closest Focus (m)	1.5	0.45