The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 50mm F1.8 Z and the Sigma 56mm F1.4 C 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. Viltrox 50mm F1.8 Z is the longer of the two lenses at 90mm. The Sigma 56mm F1.4 C with a length of 60mm, is 30mm shorter. Besides being longer, the Viltrox 50mm F1.8 Z also has a larger diameter of 70mm compared to the Sigma 56mm F1.4 C's 67mm 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. Sigma 56mm F1.4 C weighs 280g, 28% (110g) lighter than the Viltrox 50mm F1.8 Z's weight of 390g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Nikon Z Mount for size comparison purposes.
Standard Lenses in Nikon Z Mount for Size Comparison
Filter Threads
Both the Viltrox 50mm F1.8 Z and the Sigma 56mm F1.4 C have the same Filter thread size of 55mm.
Below are links to the 55mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Viltrox 50mm F1.8 Z and the Sigma 56mm F1.4 C has the same Nikon Z lens mount. Some of the latest released cameras that are compatible with the Nikon Z lenses are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z.
Sigma 56mm F1.4 C is also available in Fujifilm X and Canon RF mounts.
Focal Range
Viltrox 50mm F1.8 Z is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm.
On the other hand, the Sigma 56mm F1.4 C is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of 84mm when used on a APS-C / DX format camera.
