The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina Firin 20mm F2 FE MF and the Sigma 16mm F1.4 DC DN L 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 Tokina Firin 20mm F2 FE MF with a length of 82mm, is 10mm shorter. Besides being longer, the Sigma 16mm F1.4 DC DN L also has a larger diameter of 72mm compared to the Tokina Firin 20mm F2 FE MF's 69mm 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 16mm F1.4 DC DN L weighs 405g, 17% (85g) lighter than the Tokina Firin 20mm F2 FE MF's weight of 490g.
Filter Threads
The Tokina Firin 20mm F2 FE MF has a filter size of 62mm whereas the Sigma 16mm F1.4 DC DN L has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Tokina Firin 20mm F2 FE MF:
And these are the 67mm filters that we recommend for the Sigma 16mm F1.4 DC DN L:
Lens Mounts
The Tokina Firin 20mm F2 FE MF has the Sony E lens mount whereas the Sigma 16mm F1.4 DC DN L has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount and Leica TL2, Leica TL and Leica T Typ 701 for the Leica L Mount.
Tokina Firin 20mm F2 FE MF is also available in Sony E mount.
Focal Range
Tokina Firin 20mm F2 FE MF is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30mm.
On the other hand, the 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.