The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 100mm F2.8 2X Ultra Macro and the Voigtlander 90mm F3.5 SL II for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Venus 100mm F2.8 2X Ultra Macro is the longer of the two lenses at 125mm. The Voigtlander 90mm F3.5 SL II with a length of 52mm is 73mm shorter. Besides being longer, the Venus 100mm F2.8 2X Ultra Macro also has a larger diameter of 72mm 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, 49% (318g) lighter than the Venus 100mm F2.8 2X Ultra Macro 's weight of 638g.
Lens Mounts
Both Venus 100mm F2.8 2X Ultra Macro and Voigtlander 90mm 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.
Venus 100mm F2.8 2X Ultra Macro is also available in Canon EF , Pentax KAF2 and Sony E mounts.
Voigtlander 90mm F3.5 SL II is also available in Canon EF and Pentax KAF mounts.
Focal Range
Venus 100mm F2.8 2X Ultra Macro is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 150mm.
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.