Comparison of Pentax 560mm f/5.6 ED AW HD DA and Sigma 500mm f/4 DG OS HSM Sports

Attribute	Pentax 560mm f/5.6 ED AW HD DA ×	Sigma 500mm f/4 DG OS HSM Sports ×
Magnification Ratio (x)	0.1	0.15
Filter Size (mm)	112	46
Focus Details	Internal with DC motor; Quick-Shift Focus system	Internal; HSM with full-time manual override
Closest Focus (m)	5.6	3.5
Lens Construction	6 elements in 5 groups	16 elements in 11 groups, including 1 SLD and two FLD elements
Length (mm)	522	381
Focal Length (mm)	560.00	500.00
Diaphragm Blades Type	rounded	rounded
Brand	Pentax	Sigma
Image Circle	APS-C	35mm
Name	Pentax 560mm f/5.6 ED AW HD DA	Sigma 500mm f/4 DG OS HSM Sports
Weight (g)	3.04	-
Type	Telephoto Prime	Telephoto Prime
Notes	Built-in slide-out lens hood. Included accessories: case, tripod adapter.	Image Stabilized; Available AF Mounts: Canon EF, Nikon F, Sigma SA.
APS Equivalent	859mm	1.5x: 750mm; 1.6x: 800mm
Aperture (f)	5.60 - 45.00	4.00 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	2.90	5.00
Diameter (mm)	130	145