The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16mm F1.4 DC DN L and the Sony E 20mm F2.8 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 16mm F1.4 DC DN L is the longer of the two lenses at 92mm. The Sony E 20mm F2.8 with a length of 20mm, is 72mm shorter. Besides being longer, the Sigma 16mm F1.4 DC DN L also has a larger diameter of 72mm compared to the Sony E 20mm F2.8's 63mm 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 E 20mm F2.8 weighs 69g, 82% (336g) lighter than the Sigma 16mm F1.4 DC DN L's weight of 405g.
Filter Threads
The Sigma 16mm F1.4 DC DN L has a filter size of 67mm whereas the Sony E 20mm F2.8 has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sigma 16mm F1.4 DC DN L:
And these are the 49mm filters that we recommend for the Sony E 20mm F2.8:
Lens Mounts
The Sigma 16mm F1.4 DC DN L has the Leica L lens mount whereas the Sony E 20mm F2.8 has the Sony E lens mount. Some of the latest released cameras that are compatible with these mounts are Leica TL2, Leica TL and Leica T Typ 701 for the Leica L Mount and Sony A6700, Sony FX30 and Sony ZV-E10 for the Sony E Mount.
Focal Range
Sigma 16mm F1.4 DC DN L is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of
24mm when used on a APS-C / DX format camera.
On the other hand, the Sony E 20mm F2.8 is a prime lens with fixed focal lenght of 20mm which has an effective (full-frame 35mm equivalent) focal range of 30mm when used on a APS-C / DX format camera.