The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 85mm F1.4 EX DG HSM and the Carl Zeiss Makro-Planar T2/100 for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Carl Zeiss Makro-Planar T2/100 is the longer of the two lenses at 113mm. The Sigma 85mm F1.4 EX DG HSM with a length of 88mm, is 25mm shorter. On the other hand, the Sigma 85mm F1.4 EX DG HSM has a larger diameter of 86mm compared to the Carl Zeiss Makro-Planar T2/100's 76mm diameter.
The 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. Carl Zeiss Makro-Planar T2/100 weighs 680g, 6% (45g) lighter than the Sigma 85mm F1.4 EX DG HSM's weight of 725g.
Lens Mounts
Both the Sigma 85mm F1.4 EX DG HSM and the Carl Zeiss Makro-Planar T2/100 has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Sigma 85mm F1.4 EX DG HSM is also available in Nikon F (FX) , Pentax KAF3, Sony Alpha and Sigma SA mounts.
Carl Zeiss Makro-Planar T2/100 is also available in Pentax KAF and Nikon F (FX) mounts.
Focal Range
Sigma 85mm F1.4 EX DG HSM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 136mm.
Carl Zeiss Makro-Planar T2/100 is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 160mm.