The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 35mm F2.8 ZA CZ and the Sigma 30mm F2.8 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. 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, which means it is 15g (11%) lighter than the Sigma 30mm F2.8 DN which has a weight of 135g.
Lens Mounts
Both the Sony FE 35mm F2.8 ZA CZ and the Sigma 30mm F2.8 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 30mm F2.8 DN is also available in Micro Four Thirds mount.
Focal Range
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.
On the other hand, the 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.