The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F1.4 EX DC HSM and the Voigtlander 28mm F2.8 Color Skopar SL II 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 EX DC HSM is the longer of the two lenses at 59mm. The Voigtlander 28mm F2.8 Color Skopar SL II with a length of 25mm, is 34mm shorter. Besides being longer, the Sigma 30mm F1.4 EX DC HSM also has a larger diameter of 77mm compared to the Voigtlander 28mm F2.8 Color Skopar 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 28mm F2.8 Color Skopar SL II weighs 180g, 58% (250g) lighter than the Sigma 30mm F1.4 EX DC HSM's weight of 430g.
Filter Threads
The Sigma 30mm F1.4 EX DC HSM has a filter size of 62mm whereas the Voigtlander 28mm F2.8 Color Skopar SL II 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 62mm filters that we recommend you to consider for the Sigma 30mm F1.4 EX DC HSM:
And these are the 52mm filters that we recommend for the Voigtlander 28mm F2.8 Color Skopar SL II:
Lens Mounts
The Sigma 30mm F1.4 EX DC HSM has the Nikon F (DX) lens mount whereas the Voigtlander 28mm F2.8 Color Skopar SL II has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 30mm F1.4 EX DC HSM is also available in Canon EF-S , Four Thirds, Pentax KAF, Sony Alpha and Sigma SA mounts.
Voigtlander 28mm F2.8 Color Skopar SL II is also available in Canon EF mount.
Focal Range
Sigma 30mm F1.4 EX DC HSM 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.
On the other hand, the Voigtlander 28mm F2.8 Color Skopar SL II is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42mm.