The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Otus 85mm f1.4 and the Canon RF 70-200mm F2.8L IS USM 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. Canon RF 70-200mm F2.8L IS USM is the longer of the two lenses at 146mm. The Zeiss Otus 85mm f1.4 with a length of 128mm, is 18mm shorter. Besides being longer, the Canon RF 70-200mm F2.8L IS USM also has a larger diameter of 90mm compared to the Zeiss Otus 85mm f1.4's 88mm 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. Zeiss Otus 85mm f1.4 weighs 1040g, which means it is 30g (2%) lighter than the Canon RF 70-200mm F2.8L IS USM which has a weight of 1070g.
Filter Threads
Both the Zeiss Otus 85mm f1.4 and the Canon RF 70-200mm F2.8L IS USM have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Zeiss Otus 85mm f1.4 and the Canon RF 70-200mm F2.8L IS USM has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R6 V, Canon R6 III and Canon C50.
Zeiss Otus 85mm f1.4 is also available in the Canon EF , Nikon F (FX), Sony E and Nikon Z mounts.
Focal Range
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 a 35mm (FF) equivalent of
127.5mm.
On the other hand, the Canon RF 70-200mm F2.8L IS USM has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 112 - 320mm.
