The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 40mm F1.4 DG HSM A 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 Sigma 40mm F1.4 DG HSM A with a length of 131mm, is 10mm shorter. Besides being longer, the Zeiss Otus 1.4/55 also has a larger diameter of 92mm compared to the Sigma 40mm F1.4 DG HSM A'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 1.4/55 weighs 970g, 19% (230g) lighter than the Sigma 40mm F1.4 DG HSM A's weight of 1200g.
Filter Threads
The Sigma 40mm F1.4 DG HSM A has a filter size of 82mm 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 82mm filters that we recommend you to consider for the Sigma 40mm F1.4 DG HSM A:
And these are the 77mm filters that we recommend for the Zeiss Otus 1.4/55:
Lens Mounts
The Sigma 40mm F1.4 DG HSM A has the Canon EF lens mount whereas the Zeiss Otus 1.4/55 has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 40mm F1.4 DG HSM A is also available in the Nikon F (FX) , Sigma SA, Sony E and Leica L mounts.
Zeiss Otus 1.4/55 is also available in Canon EF mount.
Focal Range
Sigma 40mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
64mm.
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 1.5x crop, it provides a 35mm (FF) equivalent of 82.5mm.
