The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7Artisans FF 18mm f5.6 L and the Sigma 16-28mm F2.8 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 16-28mm F2.8 L is the longer of the two lenses at 101mm. The 7Artisans FF 18mm f5.6 L with a length of 32mm, is 69mm shorter. Besides being longer, the Sigma 16-28mm F2.8 L also has a larger diameter of 77mm compared to the 7Artisans FF 18mm f5.6 L's 61mm diameter.
Below you can find a scaled side-by-side image of 7Artisans FF 18mm f5.6 L and Sigma 16-28mm F2.8 L to get a better idea of how their sizes compare in real life.
Comparison image of the 7Artisans FF 18mm f5.6 L and the Sigma 16-28mm F2.8 L 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 FF 18mm f5.6 L weighs 146g, which means it is 304g (67%) lighter than the Sigma 16-28mm F2.8 L which has a weight of 450g.
Filter Threads
The 7Artisans FF 18mm f5.6 L has a filter size of 49mm whereas the Sigma 16-28mm F2.8 L 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 49mm filters that we recommend you to consider for the 7Artisans FF 18mm f5.6 L:
And these are the 72mm filters that we recommend for the Sigma 16-28mm F2.8 L:
Lens Mounts
Both the 7Artisans FF 18mm f5.6 L and the Sigma 16-28mm F2.8 L has the same Leica L lens mount . Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3-P , Panasonic S1 II and Panasonic S1 IIE .
Focal Range
7Artisans FF 18mm f5.6 L is a prime lens with fixed focal lenght of 18mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
27mm .
On the other hand, the Sigma 16-28mm F2.8 L has a focal range of 16-28mm and 1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 24 - 42mm .
