The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander 90mm F3.5 SL II and the Sigma 105mm F2.8 EX DG Macro for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 105mm F2.8 EX DG Macro is the longer of the two lenses at 98mm. The Voigtlander 90mm F3.5 SL II with a length of 52mm is 46mm shorter. Besides being longer, the Sigma 105mm F2.8 EX DG Macro also has a larger diameter of 74mm compared to Voigtlander 90mm F3.5 SL II's 63mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Voigtlander 90mm F3.5 SL II weighs 320g, which means it is 140g (30%) lighter than the Sigma 105mm F2.8 EX DG Macro which has a weight of 460g.
Lens Mounts
Both Voigtlander 90mm F3.5 SL II and Sigma 105mm F2.8 EX DG Macro has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Voigtlander 90mm F3.5 SL II is also available in Canon EF and Pentax KAF mounts.
Sigma 105mm F2.8 EX DG Macro is also available in Canon EF , Pentax KAF, Sony Alpha, Sigma SA and Four Thirds mounts.
Focal Range
Voigtlander 90mm F3.5 SL II is a prime lens with fixed focal lenght of 90mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 135mm.
Sigma 105mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 157.5mm.