The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica SL 21mm F2 ASPH and the Sigma 35mm F1.4 DG HSM 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. Leica SL 21mm F2 ASPH is the longer of the two lenses at 102mm. The Sigma 35mm F1.4 DG HSM with a length of 94mm, is 8mm shorter. On the other hand, the Sigma 35mm F1.4 DG HSM has a larger diameter of 77mm compared to the Leica SL 21mm F2 ASPH's 73mm diameter.
Below you can find a scaled side-by-side image of Leica SL 21mm F2 ASPH and Sigma 35mm F1.4 DG HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Leica SL 21mm F2 ASPH and the Sigma 35mm F1.4 DG HSM 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. Sigma 35mm F1.4 DG HSM weighs 665g, 15% (124g) lighter than the Leica SL 21mm F2 ASPH's weight of 789g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Leica L Mount for size comparison purposes.
Wideangle Leica L Mount
Filter Threads
Both the Leica SL 21mm F2 ASPH and the Sigma 35mm F1.4 DG HSM have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Leica SL 21mm F2 ASPH and the Sigma 35mm F1.4 DG HSM 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 .
Canon EF , Pentax KAF3 , Sony Alpha , Sigma SA and Nikon F (FX) mounts.
Focal Range
Leica SL 21mm F2 ASPH is a prime lens with fixed focal lenght of 21mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
31.5mm .
On the other hand, the Sigma 35mm F1.4 DG HSM is a prime lens with fixed focal lenght of 35mm.
