Comparison of Olympus 75-300mm ƒ/4.8-6.7 ED M.Zuiko Digital and Tamron AF 70-300mm f/4-5.6 Di LD Macro 1:2

Attribute	Tamron AF 70-300mm f/4-5.6 Di LD Macro 1:2 ×	Olympus 75-300mm ƒ/4.8-6.7 ED M.Zuiko Digital ×
Diaphragm Blades Type	-	rounded
Notes	Available AF Mounts: Canon, Minolta, Nikon, Pentax; Included Accessories: Lens Hood	Included Accessores: Lens Hood
Aperture (f)	4.00 - 22.00	4.80 - 22.00
Type	Telephoto Zoom	Telephoto Zoom
Filter Size (mm)	62	58
Diameter (mm)	76.6	70
APS Equivalent	1.5x: 105 - 450mm; 1.6x: 112 - 480mm	-
Diaphragm Blades	9	7
Lens Construction	13 elements in 9 groups, including 1 LD element	18 elements in 13 groups, including 2 ED and 3 HR elements
Image Circle	35mm	Micro Four-Thirds
Focal Length (mm)	70.00 - 300.00	75.00 - 300.00
Brand	Tamron	Olympus
Name	Tamron AF 70-300mm f/4-5.6 Di LD Macro 1:2	Olympus 75-300mm ƒ/4.8-6.7 ED M.Zuiko Digital
Weight (g)	435	430
Diagonal Angle of View (degree)	8.30 - 34.40	4.10 - 16.00
Focus Details	External	Rear focusing with high-speed, silent AF (MSC)
Zoom System	Rotary	Rotary
Length (mm)	116.5	116
35mm Equivalent	-	150 - 600mm
Magnification Ratio (x)	0.5	0.18
Front Element Rotation	-	-
Closest Focus (m)	0.95	0.9