The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Milvus 15mm F2.8 and the Samyang 14mm F2.8 for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Zeiss Milvus 15mm F2.8 is the longer of the two lenses at 100mm. The Samyang 14mm F2.8 with a length of 96mm is 4mm shorter. Besides being longer, the Zeiss Milvus 15mm F2.8 also has a larger diameter of 102mm compared to Samyang 14mm F2.8's 87mm diameter.
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. Samyang 14mm F2.8 weighs 552g, 41% (395g) lighter than the Zeiss Milvus 15mm F2.8's weight of 947g.
Below you can find the dimension and weight table of the 'Wideangle Prime Lenses in Canon EF Mount for size comparison purposes.
Wideangle Prime Lenses in Canon EF Mount for Size Comparison
Both Zeiss Milvus 15mm F2.8 and Samyang 14mm F2.8 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.
Zeiss Milvus 15mm F2.8 is also available in Nikon F (FX) mount.
Samyang 14mm F2.8 is also available in Nikon F (FX) , Four Thirds, Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.
Zeiss Milvus 15mm F2.8 is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 24mm.
Samyang 14mm F2.8 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 22.4mm.