The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander SEPTON 40mm f2 and the Sigma 30mm 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. Sigma 30mm F1.4 C is the longer of the two lenses at 73mm. The Voigtlander SEPTON 40mm f2 with a length of 32mm, is 41mm shorter. On the other hand, the Voigtlander SEPTON 40mm f2 has a larger diameter of 68mm compared to the Sigma 30mm F1.4 C's 65mm 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. Voigtlander SEPTON 40mm f2 weighs 205g, which means it is 60g (22%) lighter than the Sigma 30mm F1.4 C which has a weight of 265g.
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 Voigtlander SEPTON 40mm f2 and the Sigma 30mm F1.4 C have the same Filter thread size of 52mm.
Below are links to the 52mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Voigtlander SEPTON 40mm f2 and the Sigma 30mm 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.
Voigtlander SEPTON 40mm f2 is also available in the Sony E mount.
Sigma 30mm F1.4 C is also available in Sony E , Micro Four Thirds, Fujifilm X, Leica L and Canon RF mounts.
Focal Range
Voigtlander SEPTON 40mm f2 is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
60mm.
On the other hand, the Sigma 30mm F1.4 C is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 45mm when used on a APS-C / DX format camera.
