The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 100mm F2.8 Macro and the Zeiss Otus 85mm F1.4 for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Zeiss Otus 85mm F1.4 is the longer of the two lenses at 138mm. The Samyang 100mm F2.8 Macro with a length of 123mm is 15mm shorter. Besides being longer, the Zeiss Otus 85mm F1.4 also has a larger diameter of 101mm compared to Samyang 100mm F2.8 Macro's 73mm 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. Samyang 100mm F2.8 Macro weighs 720g, which means it is 420g (36%) lighter than the Zeiss Otus 85mm F1.4 which has a weight of 1140g.
Both Samyang 100mm F2.8 Macro and Zeiss Otus 85mm F1.4 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.
Samyang 100mm F2.8 Macro is also available in Canon EF , Fujifilm X, Micro Four Thirds, Pentax KAF, Samsung NX, Sony Alpha and Sony E mounts.
Zeiss Otus 85mm F1.4 is also available in Canon EF mount.
Samyang 100mm F2.8 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.
Zeiss Otus 85mm F1.4 is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides an 35mm (FF) equivalent of 127.5mm.