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

Attribute	Sigma 120-300mm f/2.8 EX DG OS HSM APO ×	Panasonic 70-200mm f/2.8 OIS Lumix S Pro (S-E70200) ×
Notes	Image Stabilized (up to 4 stops). Available AF Mounts: Sigma, Canon, Nikon. Included Accessories: Bayonet type Hood (LH1128-01), Tripod socket (TS-31	O.I.S. Image Stabilization (Dual I.S. 2 compatible); Dust/splash-resistant
Magnification Ratio (x)	0.12	0.21
Filter Size (mm)	105	82
Length (mm)	289.2	208.6
Closest Focus (m)	1.5	0.95
Diagonal Angle of View (degree)	8.20 - 20.40	12.00 - 34.00
Focus Details	Internal; HSM with full-time manual override	Internal AF double focus system; AF/MF clutch mechanism
Focal Length (mm)	120.00 - 300.00	70.00 - 200.00
APS Equivalent	1.5x: 180 - 450mm; 1.6x: 192 - 480mm	105 - 300mm
Brand	Sigma	Panasonic
Image Circle	35mm	35mm (L-Mount)
Name	Sigma 120-300mm f/2.8 EX DG OS HSM APO	Panasonic 70-200mm f/2.8 OIS Lumix S Pro (S-E70200)
Weight (g)	-	1.57
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	9	11
Diaphragm Blades Type	rounded	circular
Lens Construction	23 elements in 18 groups, including 1 SLD and 2 FLD elements	22 elements in 17 groups, including 1 aspherical, 2 UED, and 3 ED elements; Fluorine coating on front element
Zoom System	Rotary; Internal	Rotary
Diameter (mm)	114.4	94.4