Comparison of Olympus 150-400mm f/4.5 TC1.25x IS PRO ED M.Zuiko Digital and Sigma 500mm f/4 DG OS HSM Sports

Attribute	Sigma 500mm f/4 DG OS HSM Sports ×	Olympus 150-400mm f/4.5 TC1.25x IS PRO ED M.Zuiko Digital ×
Notes	Image Stabilized; Available AF Mounts: Canon EF, Nikon F, Sigma SA.	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
Aperture (f)	4.00 - 32.00	1.25 - 29.00
Magnification Ratio (x)	0.15	0.12
Filter Size (mm)	46	95
Focus Details	Internal; HSM with full-time manual override	-
Closest Focus (m)	3.5	1.3
Focal Length (mm)	500.00	150.00 - 400.00
Zoom System	-	Rotary
Brand	Sigma	Olympus
Image Circle	35mm	Image Circle
Name	Sigma 500mm f/4 DG OS HSM Sports	Olympus 150-400mm f/4.5 TC1.25x IS PRO ED M.Zuiko Digital
Weight (g)	-	1.875
Type	Telephoto Prime	Telephoto Zoom
Diaphragm Blades Type	rounded	rounded
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	5.00	8.20
Lens Construction	16 elements in 11 groups, including 1 SLD and two FLD 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)
Diameter (mm)	145	115.8
Length (mm)	381	314.3
APS Equivalent	1.5x: 750mm; 1.6x: 800mm	-
35mm Equivalent	-	300-800mm