Comparison of Pentax 560mm f/5.6 ED AW HD DA and Sigma 50-150mm ƒ/2.8 EX DC OS HSM APO

Attribute	Pentax 560mm f/5.6 ED AW HD DA ×	Sigma 50-150mm ƒ/2.8 EX DC OS HSM APO ×
Aperture (f)	5.60 - 45.00	2.80 - 22.00
Filter Size (mm)	112	77
Notes	Built-in slide-out lens hood. Included accessories: case, tripod adapter.	Image Stabilized (up to 4 stops correction); Planned AF Mounts: Canon, Nikon, Pentax, Sigma, Sony; Included Accessories: Lens Hood, Case
Closest Focus (m)	5.6	0.8
Magnification Ratio (x)	0.1	0.16
Diameter (mm)	130	86.4
Type	Telephoto Prime	Telephoto Zoom
APS Equivalent	859mm	1.5x: 75 - 225mm; 1.6x: 80 - 240mm
Diaphragm Blades	9	9
Image Circle	APS-C	APS-C
Focal Length (mm)	560.00	50.00 - 150.00
Brand	Pentax	Sigma
Name	Pentax 560mm f/5.6 ED AW HD DA	Sigma 50-150mm ƒ/2.8 EX DC OS HSM APO
Weight (g)	3.04	1.34
Diaphragm Blades Type	rounded	rounded
Lens Construction	6 elements in 5 groups	21 elements in 15 groups, including 6 SLD elements
Diagonal Angle of View (degree)	2.90	9.50 - 27.90
Length (mm)	522	197.6
Zoom System	-	Rotary
Focus Details	Internal with DC motor; Quick-Shift Focus system	HSM (Hyper Sonic Motor) with full-time manual focus override