The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7Artisans 35mm F1.8 Lite and the Tamron 17-70 F2.8 Di III-A VC 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 17-70 F2.8 Di III-A VC is the longer of the two lenses at 119mm. The 7Artisans 35mm F1.8 Lite with a length of 51mm, is 68mm shorter. Besides being longer, the Tamron 17-70 F2.8 Di III-A VC also has a larger diameter of 75mm compared to the 7Artisans 35mm F1.8 Lite's 67mm diameter.
Below you can find a scaled side-by-side image of 7Artisans 35mm F1.8 Lite and Tamron 17-70 F2.8 Di III-A VC to get a better idea of how their sizes compare in real life.
Comparison image of the 7Artisans 35mm F1.8 Lite and the Tamron 17-70 F2.8 Di III-A VC 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. 7Artisans 35mm F1.8 Lite weighs 181g, which means it is 344g (65%) lighter than the Tamron 17-70 F2.8 Di III-A VC which has a weight of 525g.
Filter Threads
The 7Artisans 35mm F1.8 Lite has a filter size of 58mm whereas the Tamron 17-70 F2.8 Di III-A VC 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 58mm filters that we recommend you to consider for the 7Artisans 35mm F1.8 Lite:
And these are the 67mm filters that we recommend for the Tamron 17-70 F2.8 Di III-A VC:
Lens Mounts
The 7Artisans 35mm F1.8 Lite has the Fujifilm X lens mount whereas the Tamron 17-70 F2.8 Di III-A VC has the Sony E lens mount . Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount.
7Artisans 35mm F1.8 Lite is also available in the Sony E and Nikon Z mounts.
Tamron 17-70 F2.8 Di III-A VC is also available in Fujifilm X mount.
Focal Range
7Artisans 35mm F1.8 Lite is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of
52.5mm when used on a APS-C / DX format camera. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5mm .
On the other hand, the Tamron 17-70 F2.8 Di III-A VC has a focal range of 17-70mm and 4.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 25.5-105mm when used on a APS-C / DX format camera.