The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 27mm F1.2 Pro XF and the Sigma 23mm F1.4 DC DN 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 27mm F1.2 Pro XF is the longer of the two lenses at 92mm. The Sigma 23mm F1.4 DC DN C with a length of 79mm, is 13mm shorter. Besides being longer, the Viltrox 27mm F1.2 Pro XF also has a larger diameter of 73mm compared to the Sigma 23mm F1.4 DC DN C's 66mm 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 23mm F1.4 DC DN C weighs 330g, 41% (230g) lighter than the Viltrox 27mm F1.2 Pro XF's weight of 560g.
Filter Threads
The Viltrox 27mm F1.2 Pro XF has a filter size of 67mm whereas the Sigma 23mm F1.4 DC DN C has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Viltrox 27mm F1.2 Pro XF:
And these are the 52mm filters that we recommend for the Sigma 23mm F1.4 DC DN C:
Lens Mounts
The Viltrox 27mm F1.2 Pro XF has the Fujifilm X lens mount whereas the Sigma 23mm F1.4 DC DN C has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
Sigma 23mm F1.4 DC DN C is also available in Leica L and Fujifilm X mounts.
Focal Range
Viltrox 27mm F1.2 Pro XF is a prime lens with fixed focal lenght of 27mm which has an effective (full-frame 35mm equivalent) focal range of
40.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 23mm F1.4 DC DN C is a prime lens with fixed focal lenght of 23mm which has an effective (full-frame 35mm equivalent) focal range of 34.5mm when used on a APS-C / DX format camera.
