The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 12-20mm f2.8 and the Sigma 35mm F1.2 II 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 12-20mm f2.8 is the longer of the two lenses at 119mm. The Sigma 35mm F1.2 II with a length of 111mm, is 8mm shorter. Besides being longer, the Tamron 12-20mm f2.8 also has a larger diameter of 90mm compared to the Sigma 35mm F1.2 II's 81mm diameter.
Below you can find a scaled side-by-side image of Tamron 12-20mm f2.8 and Sigma 35mm F1.2 II to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 12-20mm f2.8 and the Sigma 35mm F1.2 II Size and Weight 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 12-20mm f2.8 weighs 570g, which means it is 185g (24%) lighter than the Sigma 35mm F1.2 II which has a weight of 755g.
Filter Threads
The Tamron 12-20mm f2.8 has a filter size of 67mm whereas the Sigma 35mm F1.2 II has a 72mm 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 12-20mm f2.8:
And these are the 72mm filters that we recommend for the Sigma 35mm F1.2 II:
Lens Mounts
The Tamron 12-20mm f2.8 has the Sony E lens mount whereas the Sigma 35mm F1.2 II has the Leica L lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Sony E mount.
Focal Range
Tamron 12-20mm f2.8 has a focal range of 12-20mm and
1.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
18 - 30mm .
On the other hand, the Sigma 35mm F1.2 II is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm .
