Comparison of Panasonic 25mm f/1.4 II ASPH Leica DG SUMMILUX and Sigma 30mm f/1.4 DC DN Contemporary

Attribute	Sigma 30mm f/1.4 DC DN Contemporary ×	Panasonic 25mm f/1.4 II ASPH Leica DG SUMMILUX ×
Diaphragm Blades Type	rounded	circular
Notes	Available AF mounts: Micro Four Thirds, Sony E-Mount. Included Accessories: Lens caps, lens hood. Compatible with Sigma USB Dock.	Splash- and dust-resistant. Included Accessories: Hood, front and rear caps, storage bag.
Aperture (f)	1.40 - 16.00	1.40 - 16.00
Magnification Ratio (x)	0.14	0.11
Filter Size (mm)	52	46
35mm Equivalent	-	50mm
Type	Standard Prime	Standard Prime
Diaphragm Blades	9	7
Lens Construction	9 elements in 7 groups, including 1 aspherical element and 1 double-sided aspherical element	9 elements in 7 groups, including 1 UHR (Ultra High Refractive Index) and 2 Aspherical elements; Nano Surface Coating
Image Circle	Image Circle	Micro Four-Thirds
Focal Length (mm)	30.00	25.00
Brand	Sigma	Panasonic
Name	Sigma 30mm f/1.4 DC DN Contemporary	Panasonic 25mm f/1.4 II ASPH Leica DG SUMMILUX
Weight (g)	264	205
Diagonal Angle of View (degree)	50.70	47.00
Focus Details	Autofocus via stepper motor designed to support video	High speed AF (240fps sensor drive)
Diameter (mm)	66	63
Length (mm)	73.4	54.5
APS Equivalent	1.5x: 45mm; 1.6x: 48mm	-
Closest Focus (m)	0.3	0.3