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 Zeiss Milvus 18mm F2.8 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 Milvus 15mm F2.8 is the longer of the two lenses at 100mm. The Zeiss Milvus 18mm F2.8 with a length of 93mm, is 7mm shorter. Besides being longer, the Zeiss Milvus 15mm F2.8 also has a larger diameter of 102mm compared to the Zeiss Milvus 18mm F2.8's 73mm 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 Milvus 18mm F2.8 weighs 721g, 23% (226g) 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.
Ultra-Wideangle Lenses in Canon EF Mount for Size Comparison
Filter Threads
The Zeiss Milvus 15mm F2.8 has a filter size of 95mm whereas the Zeiss Milvus 18mm F2.8 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 95mm filters that we recommend you to consider for the Zeiss Milvus 15mm F2.8:
And these are the 77mm filters that we recommend for the Zeiss Milvus 18mm F2.8:
Lens Mounts
Both the Zeiss Milvus 15mm F2.8 and the Zeiss Milvus 18mm F2.8 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 Milvus 15mm F2.8 is also available in the Nikon F (FX) mount.
Zeiss Milvus 18mm F2.8 is also available in Nikon F (FX) mount.
Focal Range
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 a 35mm (FF) equivalent of
24mm.
On the other hand, the Zeiss Milvus 18mm F2.8 is a prime lens with fixed focal lenght of 18mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 28.8mm.
