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 16mm F1.4 DC DN 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. Leica SL 21mm F2 ASPH is the longer of the two lenses at 102mm. The Sigma 16mm F1.4 DC DN L with a length of 92mm, is 10mm shorter. Besides being longer, the Leica SL 21mm F2 ASPH also has a larger diameter of 73mm compared to the Sigma 16mm F1.4 DC DN L's 72mm diameter.
Below you can find a scaled side-by-side image of Leica SL 21mm F2 ASPH and Sigma 16mm F1.4 DC DN L 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 16mm F1.4 DC DN 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. Sigma 16mm F1.4 DC DN L weighs 405g, 48% (384g) 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 16mm F1.4 DC DN L 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 16mm F1.4 DC DN 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
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 16mm F1.4 DC DN L is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of 24mm when used on a APS-C / DX format camera.
