The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 11-20mm F2.8 A and the Tokina Firin 20mm F2 FE MF 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. Tamron 11-20mm F2.8 A is the longer of the two lenses at 86mm. The Tokina Firin 20mm F2 FE MF with a length of 82mm, is 4mm shorter. Besides being longer, the Tamron 11-20mm F2.8 A also has a larger diameter of 73mm 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. Tamron 11-20mm F2.8 A weighs 335g, which means it is 155g (31%) lighter than the Tokina Firin 20mm F2 FE MF which has a weight of 490g.
Filter Threads
The Tamron 11-20mm F2.8 A has a filter size of 67mm whereas the Tokina Firin 20mm F2 FE MF has a 62mm 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 Tamron 11-20mm F2.8 A:
And these are the 62mm filters that we recommend for the Tokina Firin 20mm F2 FE MF:
Lens Mounts
Both the Tamron 11-20mm F2.8 A and the Tokina Firin 20mm F2 FE MF 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.
Tokina Firin 20mm F2 FE MF is also available in Sony E mount.
Focal Range
Tamron 11-20mm F2.8 A has a focal range of 11-20mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
16.5-30mm when used on a APS-C / DX format camera.
On the other hand, the 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.