The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 55mm f1.8 EVO 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 55mm f1.8 EVO is the longer of the two lenses at 76mm. The Sigma 56mm F1.4 C with a length of 60mm, is 16mm shorter. Besides being longer, the Viltrox 55mm f1.8 EVO also has a larger diameter of 69mm 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, 24% (90g) lighter than the Viltrox 55mm f1.8 EVO's weight of 370g.
Filter Threads
The Viltrox 55mm f1.8 EVO has a filter size of 58mm whereas the Sigma 56mm F1.4 C has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Viltrox 55mm f1.8 EVO:
And these are the 55mm filters that we recommend for the Sigma 56mm F1.4 C:
Lens Mounts
The Viltrox 55mm f1.8 EVO has the Sony E lens mount whereas the Sigma 56mm F1.4 C has the Canon RF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Canon R50 V, Canon R100 and Canon R50 for the Canon RF Mount.
Viltrox 55mm f1.8 EVO is also available in the Nikon Z mount.
Sigma 56mm F1.4 C is also available in Fujifilm X and Nikon Z mounts.
Focal Range
Viltrox 55mm f1.8 EVO is a prime lens with fixed focal lenght of 55mm. 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 89.6mm when used on a APS-C / DX format camera.
