The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7Artisans 75mm f1.4 and the Sigma 105mm F2.8 DG DN Macro 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 105mm F2.8 DG DN Macro is the longer of the two lenses at 134mm. The 7Artisans 75mm f1.4 with a length of 77mm, is 57mm shorter. Besides being longer, the Sigma 105mm F2.8 DG DN Macro also has a larger diameter of 74mm compared to the 7Artisans 75mm f1.4's 62mm 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 75mm f1.4 weighs 408g, which means it is 307g (42%) lighter than the Sigma 105mm F2.8 DG DN Macro which has a weight of 715g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Leica L Mount for size comparison purposes.
Telephoto Lenses in Leica L Mount for Size Comparison
Filter Threads
The 7Artisans 75mm f1.4 has a filter size of 58mm whereas the Sigma 105mm F2.8 DG DN Macro 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 58mm filters that we recommend you to consider for the 7Artisans 75mm f1.4:
And these are the 62mm filters that we recommend for the Sigma 105mm F2.8 DG DN Macro:
Lens Mounts
Both the 7Artisans 75mm f1.4 and the Sigma 105mm F2.8 DG DN Macro has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica TL2, Leica TL and Leica T Typ 701.
7Artisans 75mm f1.4 is also available in the Sony E , Canon RF and Nikon Z mounts.
Sigma 105mm F2.8 DG DN Macro is also available in Sony E mount.
Focal Range
7Artisans 75mm f1.4 is a prime lens with fixed focal lenght of 75mm which has an effective (full-frame 35mm equivalent) focal range of
112.5mm when used on a 35mm FF format camera.
On the other hand, the Sigma 105mm F2.8 DG DN Macro is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 157.5mm.
