Comparison of Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF and Tamron 14-150mm f/3.5-5.8 Di III VC (C001)

Attribute	Tamron 14-150mm f/3.5-5.8 Di III VC (C001) ×	Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF ×
Filter Size (mm)	52	62
Notes	Lens Mount: Micro Four Thirds; Equipped with Tamron's VC (Vibration Compensation) mechanism; Available in black or silver	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax
Closest Focus (m)	0.5	0.5
Magnification Ratio (x)	0.26	0.18
Diaphragm Blades Type	circular	-
Type	Standard Zoom	Standard Zoom
APS Equivalent	-	1.5x: 42 - 157.5mm; 1.6x: 44.8 - 168mm
Zoom System	Rotary	Rotary
Image Circle	Image Circle	35mm
Focal Length (mm)	14.00 - 150.00	28.00 - 105.00
Brand	Tamron	Sigma
Name	Tamron 14-150mm f/3.5-5.8 Di III VC (C001)	Sigma 28-105mm f/3.8-5.6 UC-III Aspherical IF
Weight (g)	280	275
Aperture (f)	3.50 - 22.00	3.80 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	8.20 - 75.00	23.30 - 75.40
Lens Construction	17 elements in 13 groups, with 1 LD and 2 aspherical elements	13 elements in 12 groups, including 1 aspherical element
Diameter (mm)	80.4	71
Length (mm)	85.2	72.5
35mm Equivalent	28 - 300mm	-
Focus Details	-	Internal