Comparison of Canon EF-S 18-200mm f/3.5-5.6 IS and Tamron 28-200mm F/2.8-5.6 Di III RXD (Model A071)

Attribute	Canon EF-S 18-200mm f/3.5-5.6 IS ×	Tamron 28-200mm F/2.8-5.6 Di III RXD (Model A071) ×
Aperture (f)	3.50 - 22.00	2.80 - 22.00
Filter Size (mm)	72	67
Notes	Image Stabilization; EF-S lens mount, exclusively for bodies with APS-C sensors.	Available mounts: Sony E-mount; Moisture-Resistant Construction.
Closest Focus (m)	0.45	0.19
Magnification Ratio (x)	0.24	0.32
Zoom System	Rotary	Rotary (with Zoom Lock)
Type	Standard Zoom	Standard Zoom
APS Equivalent	29 - 320mm	1.5x: 42 - 300mm
Diaphragm Blades	6	7
Image Circle	Image Circle	35mm (Full-frame E-Mount)
Focal Length (mm)	18.00 - 200.00	28.00 - 200.00
Brand	Canon	Tamron
Name	Canon EF-S 18-200mm f/3.5-5.6 IS	Tamron 28-200mm F/2.8-5.6 Di III RXD (Model A071)
Weight (g)	595	575.5
Diaphragm Blades Type	rounded	circular
Lens Construction	16 elements in 12 groups, including 2 UD and 2 aspherical elements	18 elements in 14 groups, including GM (Glass Molded Aspherical), hybrid aspherical, XLD (eXtra Low Dispersion) and LD (Low Dispersion) lens elements
Diagonal Angle of View (degree)	7.80 - 74.30	12.35 - 75.38
Length (mm)	162.5	116.8
Diameter (mm)	78.6	74
Focus Details	Gear-driven by DC monitor; AF/MF switch	Internal using RXD (Rapid eXtra-silent stepping Drive) autofocus motor