Comparison of Pentax 150-450mm f/4.5-5.6ED DC AW HD D FA and Sigma 60-600mm f/4.5-6.3 DG OS HSM Sports

Attribute	Sigma 60-600mm f/4.5-6.3 DG OS HSM Sports ×	Pentax 150-450mm f/4.5-5.6ED DC AW HD D FA ×
Aperture (f)	4.50 - 32.00	4.50 - 27.00
Filter Size (mm)	105	86
Notes	Optical Image Stabilization (4 stops); Available AF Mounts: Sigma SA, Canon EF, Nikon F	High Definition (HD) coatings; Super Protect (SP) coatings to external surfaces; weather-resistant construction; removable tripod collar
Closest Focus (m)	2.6	2
Magnification Ratio (x)	0.3	0.22
Zoom System	Rotary, with zoom lock switch	Rotary with lock
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	1.5x: 90 - 900mm; 1.6x: 96 - 960mm	225 - 675mm
Diaphragm Blades	9	9
Image Circle	35mm	35mm
Focal Length (mm)	60.00 - 600.00	150.00 - 450.00
Brand	Sigma	Pentax
Name	Sigma 60-600mm f/4.5-6.3 DG OS HSM Sports	Pentax 150-450mm f/4.5-5.6ED DC AW HD D FA
Weight (g)	2700	2000
Diaphragm Blades Type	rounded	rounded
Lens Construction	25 elements in 19 groups, including 1 SLD and 3 FLD elements	18 elements in 14 groups, including ED elements
Diagonal Angle of View (degree)	12.30 - 34.30	5.50 - 16.50
Length (mm)	268.9	241.5
Diameter (mm)	120.4	95
Focus Details	Internal; HSM with full-time manual override; Focus mode and limit switches	Internal with DC motor; Quick-Shift Focus System for changing between AF and MF by simply turning the focusing ring; Focus presets and range limiter