The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Otus 100mm F1.4 and the Zeiss Otus 85mm F1.4 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. Zeiss Otus 85mm F1.4 is the longer of the two lenses at 138mm. The Zeiss Otus 100mm F1.4 with a length of 129mm, is 9mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 101mm.
Below you can find a scaled side-by-side image of Zeiss Otus 100mm F1.4 and Zeiss Otus 85mm F1.4 to get a better idea of how their sizes compare in real life.
Comparison image of the Zeiss Otus 100mm F1.4 and the Zeiss Otus 85mm F1.4 Size and Weight 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. Zeiss Otus 85mm F1.4 weighs 1200g, 14% (205g) lighter than the Zeiss Otus 100mm F1.4's weight of 1405g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon EF Mount for size comparison purposes.
Telephoto Lenses in Canon EF Mount for Size Comparison
Filter Threads
Both the Zeiss Otus 100mm F1.4 and the Zeiss Otus 85mm F1.4 have the same Filter thread size of 86mm .
Below are links to the 86mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Zeiss Otus 100mm F1.4 and the Zeiss Otus 85mm F1.4 has the same Canon EF lens mount . Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K .
Zeiss Otus 100mm F1.4 is also available in the Nikon F (FX) mount.
Zeiss Otus 85mm F1.4 is also available in Nikon F (FX) , Sony E , Canon RF and Nikon Z mounts.
Focal Range
Zeiss Otus 100mm F1.4 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 .
On the other hand, the 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 1.6x crop, it provides a 35mm (FF) equivalent of 136mm .