The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7artisans 35mm F2 and the Sigma 28mm F1.4 DG HSM A 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. Sigma 28mm F1.4 DG HSM A is the longer of the two lenses at 108mm. The 7artisans 35mm F2 with a length of 41mm, is 67mm shorter. Besides being longer, the Sigma 28mm F1.4 DG HSM A also has a larger diameter of 83mm compared to the 7artisans 35mm F2's 50mm 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. 7artisans 35mm F2 weighs 320g, which means it is 605g (65%) lighter than the Sigma 28mm F1.4 DG HSM A which has a weight of 925g.
Filter Threads
The 7artisans 35mm F2 has a filter size of 43mm whereas the Sigma 28mm F1.4 DG HSM A 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 43mm filters that we recommend you to consider for the 7artisans 35mm F2:
And these are the 77mm filters that we recommend for the Sigma 28mm F1.4 DG HSM A:
Lens Mounts
Both the 7artisans 35mm F2 and the Sigma 28mm F1.4 DG HSM A has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
7artisans 35mm F2 is also available in Canon EF-M and Fujifilm X mounts.
Sigma 28mm F1.4 DG HSM A is also available in Canon EF , Nikon F (FX), Sigma SA and Leica L mounts.
Focal Range
7artisans 35mm F2 is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
52.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 28mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42mm.