Comparison of Sigma 150-600mm ƒ/5-6.3 DG HSM OS Contemporary and Tamron SP 150-600mm f/5-6.3 Di VC USD G2 (Model A022)

Attribute	Tamron SP 150-600mm f/5-6.3 Di VC USD G2 (Model A022) ×	Sigma 150-600mm ƒ/5-6.3 DG HSM OS Contemporary ×
Aperture (f)	5.00 - 40.00	5.00 - 22.00
Filter Size (mm)	95	95
Notes	Available mounts: Canon EF-mount, Nikon F-mount, Sony A-mount; VC Optical Image Stabilization (4.5 stops; not supported for Sony)	Updated Optical Stabilizer (OS); Dust and splash-proof mount, as well as new water and oil-repellent coating on the front and rear lenses
Closest Focus (m)	2.2	2.8
Magnification Ratio (x)	0.25	0.2
Diameter (mm)	108.4	105
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	1.5x: 225 - 900mm; 1.6x: 240 - 960mm	1.5x: 225 - 900mm; 1.6x: 240 - 960mm
Diaphragm Blades	9	9
Image Circle	Image Circle	35mm
Focal Length (mm)	150.00 - 600.00	150.00 - 600.00
Brand	Tamron	Sigma
Name	Tamron SP 150-600mm f/5-6.3 Di VC USD G2 (Model A022)	Sigma 150-600mm ƒ/5-6.3 DG HSM OS Contemporary
Weight (g)	1990	1930
Diaphragm Blades Type	circular	rounded
Lens Construction	21 elements in 13 groups, including 3 LD (Low Dispersion) elements; eBAND Coating; Fluorine coating on front element	20 elements in 14 groups, including 1 FLD and 3 SLD glass elements
Zoom System	Rotary	Rotary (with zoom lock switch)
Length (mm)	257.8	260
Diagonal Angle of View (degree)	4.10 - 16.40	-
Focus Details	Ultrasonic Silent Drive (USD) with full-time manual focus override	HSM with manual override (MO) switch