The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 135mm F1.4 and the 7artisans 85mm f1.8 AF 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 135mm F1.4 is the longer of the two lenses at 136mm. The 7artisans 85mm f1.8 AF with a length of 96mm, is 40mm shorter. Besides being longer, the Sigma 135mm F1.4 also has a larger diameter of 112mm compared to the 7artisans 85mm f1.8 AF's 72mm diameter.
Below you can find a scaled side-by-side image of Sigma 135mm F1.4 and 7artisans 85mm f1.8 AF to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 135mm F1.4 and the 7artisans 85mm f1.8 AF 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 85mm f1.8 AF weighs 443g, 69% (987g) lighter than the Sigma 135mm F1.4's weight of 1430g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Leica L Mount for size comparison purposes.
Telephoto Leica L Mount
Filter Threads
The Sigma 135mm F1.4 has a filter size of 105mm whereas the 7artisans 85mm f1.8 AF 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 105mm filters that we recommend you to consider for the Sigma 135mm F1.4:
And these are the 62mm filters that we recommend for the 7artisans 85mm f1.8 AF:
Lens Mounts
Both the Sigma 135mm F1.4 and the 7artisans 85mm f1.8 AF 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 .
Sony E and Nikon Z mounts.
Focal Range
Sigma 135mm F1.4 is a prime lens with fixed focal lenght of 135mm.
On the other hand, the 7artisans 85mm f1.8 AF is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 127.5mm .
