The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander 40mm F2 SL II and the Sigma 30mm F1.4 DC HSM 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 DC HSM is the longer of the two lenses at 63mm. The Voigtlander 40mm F2 SL II with a length of 25mm, is 38mm shorter. Besides being longer, the Sigma 30mm F1.4 DC HSM also has a larger diameter of 74mm compared to the Voigtlander 40mm F2 SL II's 63mm 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 40mm F2 SL II weighs 200g, which means it is 235g (54%) lighter than the Sigma 30mm F1.4 DC HSM which has a weight of 435g.
Filter Threads
The Voigtlander 40mm F2 SL II has a filter size of 52mm whereas the Sigma 30mm F1.4 DC HSM has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Voigtlander 40mm F2 SL II:
And these are the 62mm filters that we recommend for the Sigma 30mm F1.4 DC HSM:
Lens Mounts
The Voigtlander 40mm F2 SL II has the Pentax KAF lens mount whereas the Sigma 30mm F1.4 DC HSM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount and Canon T8i, Canon 90D and Canon SL3 for the Canon EF Mount.
Voigtlander 40mm F2 SL II is also available in the Canon EF and Nikon F (FX) mounts.
Sigma 30mm F1.4 DC HSM is also available in Nikon F (DX) and Sigma SA mounts.
Focal Range
Voigtlander 40mm F2 SL II 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 DC HSM is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 48mm when used on a APS-C / DX format camera.
