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 7Artisans 10mm f3.5 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 121mm. The 7Artisans 10mm f3.5 with a length of 34mm, is 87mm shorter. Besides being longer, the Tamron 12-20mm f2.8 also has a larger diameter of 90mm compared to the 7Artisans 10mm f3.5's 59mm 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. 7Artisans 10mm f3.5 weighs 125g, 78% (460g) lighter than the Tamron 12-20mm f2.8's weight of 585g.
Filter Threads
The Tamron 12-20mm f2.8 has a filter size of 67mm whereas the 7Artisans 10mm f3.5 has a 37mm 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 37mm filters that we recommend for the 7Artisans 10mm f3.5:
Lens Mounts
Both the Tamron 12-20mm f2.8 and the 7Artisans 10mm f3.5 has the same Nikon Z lens mount. Some of the latest released cameras that are compatible with the Nikon Z lenses are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z.
Tamron 12-20mm f2.8 is also available in the Sony E mount.
7Artisans 10mm f3.5 is also available in Sony E and Fujifilm X mounts.
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 7Artisans 10mm f3.5 is a prime lens with fixed focal lenght of 10mm which has an effective (full-frame 35mm equivalent) focal range of 15mm when used on a APS-C / DX format camera.
