The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang XP 50mm F1.2 and the Zeiss Otus 1.4/55 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 1.4/55 is the longer of the two lenses at 141mm. The Samyang XP 50mm F1.2 with a length of 117mm, is 24mm shorter. On the other hand, the Samyang XP 50mm F1.2 has a larger diameter of 93mm compared to the Zeiss Otus 1.4/55's 92mm 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 1.4/55 weighs 970g, 19% (230g) lighter than the Samyang XP 50mm F1.2's weight of 1200g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Canon EF Mount for size comparison purposes.
Standard Lenses in Canon EF Mount for Size Comparison
Filter Threads
The Samyang XP 50mm F1.2 has a filter size of 86mm whereas the Zeiss Otus 1.4/55 has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 86mm filters that we recommend you to consider for the Samyang XP 50mm F1.2:
And these are the 77mm filters that we recommend for the Zeiss Otus 1.4/55:
Lens Mounts
Both the Samyang XP 50mm F1.2 and the Zeiss Otus 1.4/55 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 1.4/55 is also available in Nikon F (FX) mount.
Focal Range
Samyang XP 50mm F1.2 is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
80mm.
On the other hand, the Zeiss Otus 1.4/55 is a prime lens with fixed focal lenght of 55mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 88mm.
