Comparison of Olympus 40-150mm f/4-5.6 ED Zuiko Digital and Tamron AF 55-200mm F4-5.6 Di II LD Macro

Attribute	Tamron AF 55-200mm F4-5.6 Di II LD Macro ×	Olympus 40-150mm f/4-5.6 ED Zuiko Digital ×
Aperture (f)	4.00 - 32.00	4.00 - 22.00
Diagonal Angle of View (degree)	8.00 - 28.50	8.20 - 30.00
Filter Size (mm)	52	58
Notes	Available AF Mounts: Canon, Konica Minolta, Nikon; Included Accessories: Lens Hood	Includes Lens Hood (LH-61B) and soft case (LSC-0814); Compatible with TC-14 Teleconverter and EX-25 Extension Tube
Type	Telephoto Zoom	Telephoto Zoom
Magnification Ratio (x)	0.29	0.14
Diaphragm Blades	9	7
35mm Equivalent	-	80 - 300mm
Image Circle	APS-C	Image Circle
Focal Length (mm)	55.00 - 200.00	40.00 - 150.00
Brand	Tamron	Olympus
Name	Tamron AF 55-200mm F4-5.6 Di II LD Macro	Olympus 40-150mm f/4-5.6 ED Zuiko Digital
Weight (g)	295	220
Zoom System	Rotary	Rotary
Lens Construction	13 elements in 9 groups	12 elements in 9 groups, including one ED element
Diameter (mm)	71.6	65.5
Length (mm)	83	72
APS Equivalent	1.5x: 82.5 - 300mm; 1.6x: 88 - 320mm	-
Closest Focus (m)	0.95	0.9