Comparison of Panasonic 70-200mm f/2.8 OIS Lumix S Pro (S-E70200) and Sigma 120-300mm ƒ/2.8 DG OS HSM Sports

Attribute	Sigma 120-300mm ƒ/2.8 DG OS HSM Sports ×	Panasonic 70-200mm f/2.8 OIS Lumix S Pro (S-E70200) ×
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Filter Size (mm)	105	82
Notes	Image Stabilized (up to 4 stops); Available AF Mounts: Canon, Nikon, Sigma; Accessories: metal lens hood, lens case, tripod socket (TS-51).	O.I.S. Image Stabilization (Dual I.S. 2 compatible); Dust/splash-resistant
Closest Focus (m)	1.5	0.95
Magnification Ratio (x)	0.12	0.21
Zoom System	Rotary; Internal	Rotary
Type	Telephoto Zoom	Telephoto Zoom
APS Equivalent	1.5x: 180 - 450mm; 1.6x: 192 - 480mm	105 - 300mm
Diaphragm Blades	9	11
Image Circle	35mm	35mm (L-Mount)
Focal Length (mm)	120.00 - 300.00	70.00 - 200.00
Brand	Sigma	Panasonic
Name	Sigma 120-300mm ƒ/2.8 DG OS HSM Sports	Panasonic 70-200mm f/2.8 OIS Lumix S Pro (S-E70200)
Weight (g)	3.062	1.57
Diaphragm Blades Type	rounded	circular
Lens Construction	23 elements in 18 groups	22 elements in 17 groups, including 1 aspherical, 2 UED, and 3 ED elements; Fluorine coating on front element
Diagonal Angle of View (degree)	8.20 - 20.40	12.00 - 34.00
Length (mm)	291	208.6
Diameter (mm)	124.4	94.4
Focus Details	Internal; Hypersonic Motor (HSM) with full-time manual override	Internal AF double focus system; AF/MF clutch mechanism