The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F2.8 EX DN and the 7artisans 35mm F1.2 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 30mm F2.8 EX DN is the longer of the two lenses at 39mm. The 7artisans 35mm F1.2 with a length of 36mm, is 3mm shorter.
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 30mm F2.8 EX DN weighs 135g, which means it is 15g (9%) lighter than the 7artisans 35mm F1.2 which has a weight of 150g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
Filter Threads
The Sigma 30mm F2.8 EX DN has a filter size of 46mm whereas the 7artisans 35mm F1.2 has a 43mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 46mm filters that we recommend you to consider for the Sigma 30mm F2.8 EX DN:
And these are the 43mm filters that we recommend for the 7artisans 35mm F1.2:
Lens Mounts
Both the Sigma 30mm F2.8 EX DN and the 7artisans 35mm F1.2 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.
Sigma 30mm F2.8 EX DN is also available in Micro Four Thirds mount.
7artisans 35mm F1.2 is also available in Canon EF-M and Fujifilm X mounts.
Focal Range
Sigma 30mm F2.8 EX DN is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of
45mm when used on a APS-C / DX format camera.
On the other hand, the 7artisans 35mm F1.2 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.