The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Otus 50mm f1.4 and the Canon RF 85mm F2 Macro IS STM 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 50mm f1.4 is the longer of the two lenses at 100mm. The Canon RF 85mm F2 Macro IS STM with a length of 91mm, is 9mm shorter. On the other hand, the Canon RF 85mm F2 Macro IS STM has a larger diameter of 78mm compared to the Zeiss Otus 50mm f1.4's 77mm 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. Canon RF 85mm F2 Macro IS STM weighs 500g, 26% (177g) lighter than the Zeiss Otus 50mm f1.4's weight of 677g.
Filter Threads
Both the Zeiss Otus 50mm f1.4 and the Canon RF 85mm F2 Macro IS STM have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Zeiss Otus 50mm f1.4 and the Canon RF 85mm F2 Macro IS STM 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 50mm f1.4 is also available in the Sony E and Nikon Z mounts.
Focal Range
Zeiss Otus 50mm f1.4 is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm.
On the other hand, the Canon RF 85mm F2 Macro IS STM 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.
