The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 16mm f1.8 L and the Sigma 15mm f1.4 DG DN Art for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 15mm f1.4 DG DN Art is the longer of the two lenses at 158mm. The Viltrox AF 16mm f1.8 L with a length of 103mm, is 55mm shorter. Besides being longer, the Sigma 15mm f1.4 DG DN Art also has a larger diameter of 104mm compared to the Viltrox AF 16mm f1.8 L's 85mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Viltrox AF 16mm f1.8 L weighs 550g, which means it is 810g (59%) lighter than the Sigma 15mm f1.4 DG DN Art which has a weight of 1360g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Leica L Mount for size comparison purposes.
Ultra-Wideangle Lenses in Leica L Mount for Size Comparison
Lens Mounts
Both the Viltrox AF 16mm f1.8 L and the Sigma 15mm f1.4 DG DN Art has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z.
Sigma 15mm f1.4 DG DN Art is also available in Sony E mount.
Focal Range
Viltrox AF 16mm f1.8 L is a prime lens with fixed focal lenght of 16mm.
On the other hand, the Sigma 15mm f1.4 DG DN Art is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 22.5mm.