Comparison of Pentax 560mm f/5.6 ED AW HD DA and Sigma 12-24mm f/4.5-5.6 II DG HSM

Attribute	Pentax 560mm f/5.6 ED AW HD DA ×	Sigma 12-24mm f/4.5-5.6 II DG HSM ×
Filter Size (mm)	112	-
Closest Focus (m)	5.6	0.28
Magnification Ratio (x)	0.1	0.16
Length (mm)	522	120.2
Focus Details	Internal with DC motor; Quick-Shift Focus system	Internal; HSM with full-time manual override
Diaphragm Blades Type	rounded	-
Diagonal Angle of View (degree)	2.90	-
Image Circle	APS-C	35mm
Focal Length (mm)	560.00	12.00 - 24.00
Name	Pentax 560mm f/5.6 ED AW HD DA	Sigma 12-24mm f/4.5-5.6 II DG HSM
Brand	Pentax	Sigma
Weight (g)	3.04	-
Type	Telephoto Prime	Wide Zoom
Lens Construction	6 elements in 5 groups	17 elements in 13 groups, including 1 hybrid aspherical, 1 SLD and 4 FLD elements
Notes	Built-in slide-out lens hood. Included accessories: case, tripod adapter.	Planned AF Mounts: Nikon, Canon, Pentax, Sigma, Sony. Nikon mounts do not have an aperture ring. Some functions may not work depending on the camera
APS Equivalent	859mm	1.5x: 18 - 36mm; 1.6x: 19.2 - 38.4mm
Aperture (f)	5.60 - 45.00	0.60 - 22.00
Diaphragm Blades	9	6
Zoom System	-	Rotary
Diameter (mm)	130	87