Comparison of Panasonic 100-400mm ƒ/4-6.3 ASPH Power OIS Leica DG Vario-Elmar and Sigma APO 170-500mm f/5-6.3 DG

Attribute	Sigma APO 170-500mm f/5-6.3 DG ×	Panasonic 100-400mm ƒ/4-6.3 ASPH Power OIS Leica DG Vario-Elmar ×
Filter Size (mm)	86	72
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Additional features: Power O.I.S. Compatible with Dual Image Stabilization; Weather Sealed
Length (mm)	232	171.5
Magnification Ratio (x)	0.15	0.25
Diameter (mm)	92.5	83
Closest Focus (m)	3	1.4
Focal Length (mm)	170.00 - 500.00	100.00 - 400.00
Diagonal Angle of View (degree)	5.00 - 14.50	3.10 - 12.00
Brand	Sigma	Panasonic
Image Circle	35mm	Micro Four-Thirds
Name	Sigma APO 170-500mm f/5-6.3 DG	Panasonic 100-400mm ƒ/4-6.3 ASPH Power OIS Leica DG Vario-Elmar
Weight (g)	1345	985
Type	Telephoto Zoom	Telephoto Zoom
Aperture (f)	5.00 - 32.00	4.00 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	-	rounded
Lens Construction	13 elements in 11 groups, including 1 aspherical and 3 SLD elements	20 elements in 13 groups, including 1 aspherical ED, 1 UED and 2 ED elements
Zoom System	Rotary	Rotary
Focus Details	Internal	240fps AF Drive with Focus Limiting switch
APS Equivalent	1.5x: 255 - 750mm; 1.6x: 272 - 800mm	-
35mm Equivalent	-	200 - 800mm