The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 75mm F1.8 FE and the Voigtlander 90mm 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. Samyang AF 75mm F1.8 FE is the longer of the two lenses at 69mm. The Voigtlander 90mm F3.5 SL II with a length of 52mm, is 17mm shorter. Besides being longer, the Samyang AF 75mm F1.8 FE also has a larger diameter of 65mm compared to the Voigtlander 90mm 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. Samyang AF 75mm F1.8 FE weighs 230g, which means it is 90g (28%) lighter than the Voigtlander 90mm F3.5 SL II which has a weight of 320g.
Filter Threads
The Samyang AF 75mm F1.8 FE has a filter size of 58mm whereas the Voigtlander 90mm F3.5 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 58mm filters that we recommend you to consider for the Samyang AF 75mm F1.8 FE:
And these are the 52mm filters that we recommend for the Voigtlander 90mm F3.5 SL II:
Lens Mounts
The Samyang AF 75mm F1.8 FE has the Sony E lens mount whereas the Voigtlander 90mm F3.5 SL II has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Voigtlander 90mm F3.5 SL II is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Samyang AF 75mm F1.8 FE is a prime lens with fixed focal lenght of 75mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
112.5mm.
On the other hand, the 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 a 35mm (FF) equivalent of 135mm.
