The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron SP 15-30mm F2.8 Di VC USD G2 and the Voigtlander 20mm F3.5 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. Tamron SP 15-30mm F2.8 Di VC USD G2 is the longer of the two lenses at 145mm. The Voigtlander 20mm F3.5 SL II with a length of 29mm, is 116mm shorter. Besides being longer, the Tamron SP 15-30mm F2.8 Di VC USD G2 also has a larger diameter of 98mm compared to the Voigtlander 20mm F3.5 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 20mm F3.5 SL II weighs 205g, 81% (905g) lighter than the Tamron SP 15-30mm F2.8 Di VC USD G2's weight of 1110g.
Lens Mounts
Both the Tamron SP 15-30mm F2.8 Di VC USD G2 and the Voigtlander 20mm F3.5 SL II 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.
Tamron SP 15-30mm F2.8 Di VC USD G2 is also available in the Canon EF mount.
Voigtlander 20mm F3.5 SL II is also available in Canon EF and Pentax KAF mounts.
Focal Range
Tamron SP 15-30mm F2.8 Di VC USD G2 has a focal range of 15-30mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
22.5 - 45mm.
On the other hand, the Voigtlander 20mm F3.5 SL II is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 30mm.
