The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F2.8 DN and the Sony FE 35mm F2.8 ZA CZ 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 DN is the longer of the two lenses at 41mm. The Sony FE 35mm F2.8 ZA CZ with a length of 37mm, is 4mm shorter. On the other hand, the Sony FE 35mm F2.8 ZA CZ has a larger diameter of 62mm compared to the Sigma 30mm F2.8 DN's 61mm 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. Sony FE 35mm F2.8 ZA CZ weighs 120g, 11% (15g) lighter than the Sigma 30mm F2.8 DN's weight of 135g.
Lens Mounts
Both the Sigma 30mm F2.8 DN and the Sony FE 35mm F2.8 ZA CZ 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 DN is also available in Micro Four Thirds mount.
Focal Range
Sigma 30mm F2.8 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 Sony FE 35mm F2.8 ZA CZ 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.