Comparison of Sigma 70-200mm f/2.8 DG OS HSM Sports and Sigma APO 120-300mm f/2.8 EX DG HSM

Attribute	Sigma APO 120-300mm f/2.8 EX DG HSM ×	Sigma 70-200mm f/2.8 DG OS HSM Sports ×
Notes	Available AF Mounts: Sigma, Canon, Nikon	Optical Image Stabilization; Available AF Mounts: Sigma SA, Canon EF, Nikon F
Magnification Ratio (x)	0.12	0.21
Filter Size (mm)	105	82
Length (mm)	271	202.9
Closest Focus (m)	1.5	1.2
Diagonal Angle of View (degree)	8.20 - 20.40	12.30 - 34.30
Focus Details	Internal; HSM with full-time manual override	Internal; HSM with full-time manual override; Focus mode, hold and limit switches
Focal Length (mm)	120.00 - 300.00	70.00 - 200.00
APS Equivalent	1.5x: 180 - 450mm; 1.6x: 192 - 480mm	1.5x: 105 - 300mm; 1.6x: 112 - 320mm
Brand	Sigma	Sigma
Image Circle	35mm	35mm
Name	Sigma APO 120-300mm f/2.8 EX DG HSM	Sigma 70-200mm f/2.8 DG OS HSM Sports
Weight (g)	2600	1805
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	2.80 - 32.00	2.80 - 22.00
Diaphragm Blades	9	11
Diaphragm Blades Type	-	rounded
Lens Construction	18 elements in 16 groups, including 4 SLD elements	24 elements in 22 groups, including 1 SLD and 9 FLD elements
Zoom System	Rotary; Internal	Rotary; Internal
Diameter (mm)	112.8	94.2