The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7Artisans AF 27mm F2.8 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. 7Artisans AF 27mm F2.8 is the longer of the two lenses at 48mm. The Sigma 30mm F2.8 DN with a length of 41mm, is 7mm shorter. Besides being longer, the 7Artisans AF 27mm F2.8 also has a larger diameter of 64mm 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, 21% (37g) lighter than the 7Artisans AF 27mm F2.8's weight of 172g.
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
Lens Mounts
Both the 7Artisans AF 27mm F2.8 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 ZV-E10 II, Sony A6700 and Sony FX30.
7Artisans AF 27mm F2.8 is also available in the Fujifilm X mount.
Sigma 30mm F2.8 DN is also available in Micro Four Thirds mount.
Focal Range
7Artisans AF 27mm F2.8 is a prime lens with fixed focal lenght of 27mm which has an effective (full-frame 35mm equivalent) focal range of
40.5mm when used on a APS-C / DX format camera.
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.
