The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Batis 40mm F2 CF and the Sigma 35mm F2 DG DN 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 Batis 40mm F2 CF is the longer of the two lenses at 93mm. The Sigma 35mm F2 DG DN with a length of 65mm, is 28mm shorter. Besides being longer, the Zeiss Batis 40mm F2 CF also has a larger diameter of 91mm compared to the Sigma 35mm F2 DG DN's 70mm 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. Sigma 35mm F2 DG DN weighs 325g, 9% (36g) lighter than the Zeiss Batis 40mm F2 CF's weight of 361g.
Filter Threads
The Zeiss Batis 40mm F2 CF has a filter size of 67mm whereas the Sigma 35mm F2 DG DN has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Zeiss Batis 40mm F2 CF:
And these are the 58mm filters that we recommend for the Sigma 35mm F2 DG DN:
Lens Mounts
Both the Zeiss Batis 40mm F2 CF and the Sigma 35mm F2 DG DN has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Sigma 35mm F2 DG DN is also available in Leica L mount.
Focal Range
Zeiss Batis 40mm F2 CF is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
60mm.
On the other hand, the Sigma 35mm F2 DG DN is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm.