The type of photography that you are planning to use is an important decision factor. Here we have evaluated the SG-image AF 35mm f2.2 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 SG-image AF 35mm f2.2 with a length of 36mm, is 5mm shorter. On the other hand, the SG-image AF 35mm f2.2 has a larger diameter of 69mm 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. Sigma 30mm F2.8 DN weighs 135g, 17% (28g) lighter than the SG-image AF 35mm f2.2's weight of 163g.
Lens Mounts
The SG-image AF 35mm f2.2 has the Leica L lens mount whereas the Sigma 30mm F2.8 DN has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount.
SG-image AF 35mm f2.2 is also available in the Sony E and Nikon Z mounts.
Sigma 30mm F2.8 DN is also available in Micro Four Thirds mount.
Focal Range
SG-image AF 35mm f2.2 is a prime lens with fixed focal lenght of 2535mm. 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.
