Is the Sigma 16mm F1.4 DC DN a Weather Sealed lens?

Is the Sigma 16mm F1.4 DC DN Weather Sealed

Sigma 16mm F1.4 DC DN Alternatives in Leica L Mount

	Coverage	Weight	Focusing	Street Price
Sony E 16mm F2.8 Pancake Compare	APS-C / DX	74gr	AF	Amazon B&H Photo
Sony FE 14mm F1.8 GM Compare	35mm FF	460gr	AF	Amazon B&H Photo
Samyang 14mm F2.8 IF ED MC Aspherical Compare	35mm FF	552gr	MF	Amazon B&H Photo
Samyang 16mm f2.0 ED AS UMC CS Compare	APS-C / DX	583gr	MF	Amazon B&H Photo
Samyang AF 18mm F2.8 FE Compare	35mm FF	145gr	AF	Amazon B&H Photo
Sigma 16mm F1.4 DC DN Sony E-mount Compare	APS-C / DX	405gr	AF	Amazon B&H Photo
Samyang MF 14mm F2.8 Mk2 Compare	35mm FF	649gr	MF	Amazon B&H Photo
Sigma 19mm F2.8 DN Compare	APS-C / DX	140gr	AF	Amazon B&H Photo
Sigma 19mm F2.8 EX DN Compare	APS-C / DX	140gr	AF	Amazon B&H Photo
Zeiss Batis 18mm F2.8 Compare	35mm FF	330gr	AF	Amazon B&H Photo
Samyang AF 14mm F2.8 FE Compare	35mm FF	505gr	AF	Amazon B&H Photo

Other Frequently Asked Questions about Sigma 16mm F1.4 DC DN