Comparison of Olympus 150-400mm f/4.5 TC1.25x IS PRO ED M.Zuiko Digital and Sigma 150-600mm f/5-6.3 DG HSM OS Sports

Attribute	Sigma 150-600mm f/5-6.3 DG HSM OS Sports ×	Olympus 150-400mm f/4.5 TC1.25x IS PRO ED M.Zuiko Digital ×
Aperture (f)	5.00 - 22.00	1.25 - 29.00
Diaphragm Blades Type	rounded	rounded
Filter Size (mm)	105	95
Notes	Updated Optical Stabilizer (OS); Dust and splash-proof construction, as well as new water and oil-repellent coating on the front and rear lenses	Built-in image stabilization CIPA rated for 4.5 stops, Supported with 5-axis Sync IS up to 8 stops at 150mm, 6 stops at 400mm
Focus Details	HSM with manual override (MO) switch	-
Type	Telephoto Zoom	Telephoto Zoom
Diaphragm Blades	9	9
Diameter (mm)	121	115.8
Image Circle	35mm	Image Circle
Focal Length (mm)	150.00 - 600.00	150.00 - 400.00
Brand	Sigma	Olympus
Name	Sigma 150-600mm f/5-6.3 DG HSM OS Sports	Olympus 150-400mm f/4.5 TC1.25x IS PRO ED M.Zuiko Digital
Weight (g)	2.86	1.875
Diagonal Angle of View (degree)	-	8.20
Lens Construction	24 elements in 16 groups, including 2 FLD and 3 SLD glass elements	28 elements in 18 groups (Built-in teleconverter : 7 elements in 4 groups); (1 EDA lens, 4 Super ED lenses, 2 ED lenses, 2 HR lenses, 1 HD lens)
Zoom System	Rotary (with zoom lock switch)	Rotary
Closest Focus (m)	2.6	1.3
35mm Equivalent	-	300-800mm
Length (mm)	290.2	314.3
APS Equivalent	1.5x: 225 - 900mm; 1.6x: 240 - 960mm	-
Magnification Ratio (x)	0.2	0.12