Comparison of Sigma 500mm f/4 DG OS HSM Sports and Sony 500mm f/4 G SSM SAL-500F40G

Attribute	Sigma 500mm f/4 DG OS HSM Sports ×	Sony 500mm f/4 G SSM SAL-500F40G ×
Notes	Image Stabilized; Available AF Mounts: Canon EF, Nikon F, Sigma SA.	Sony A-mount. Weather and dust resistant. Built to order. Carbon fiber lens hood included.
Aperture (f)	4.00 - 32.00	4.00 - 32.00
Magnification Ratio (x)	0.15	0.135
Filter Size (mm)	46	42
Type	Telephoto Prime	Telephoto Prime
Closest Focus (m)	3.5	4
Diaphragm Blades	9	9
Diameter (mm)	145	140
Focal Length (mm)	500.00	500.00
APS Equivalent	1.5x: 750mm; 1.6x: 800mm	750mm
Image Circle	35mm	35mm
Brand	Sigma	Sony
Name	Sigma 500mm f/4 DG OS HSM Sports	Sony 500mm f/4 G SSM SAL-500F40G
Diaphragm Blades Type	rounded	rounded
Lens Construction	16 elements in 11 groups, including 1 SLD and two FLD elements	11 elements in 10 groups, including 3 ED elements; AR Nano Coating
Diagonal Angle of View (degree)	5.00	5.00
Length (mm)	381	367.5
Weight (g)	-	3.46
Focus Details	Internal; HSM with full-time manual override	Internal; SSM (Super Sonic wave Motor); 4 focus hold buttons, two-way DMF (Direct Manual Focus) mode button and focus range switch