The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F1.4 DG DN Art and the Leica APO-SL 50mm F2 ASPH 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 50mm F1.4 DG DN Art is the longer of the two lenses at 110mm. The Leica APO-SL 50mm F2 ASPH with a length of 102mm, is 8mm shorter. Besides being longer, the Sigma 50mm F1.4 DG DN Art also has a larger diameter of 78mm compared to the Leica APO-SL 50mm F2 ASPH's 73mm diameter.
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Below you can find a scaled side-by-side image of Sigma 50mm F1.4 DG DN Art and Leica APO-SL 50mm F2 ASPH to get a better idea of how their sizes compare in real life.
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 50mm F1.4 DG DN Art weighs 669g, which means it is 71g (9%) lighter than the Leica APO-SL 50mm F2 ASPH which has a weight of 740g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Leica L Mount for size comparison purposes.
Standard Lenses in Leica L Mount for Size Comparison
Filter Threads
The Sigma 50mm F1.4 DG DN Art has a filter size of 72mm whereas the Leica APO-SL 50mm F2 ASPH has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 72mm filters that we recommend you to consider for the Sigma 50mm F1.4 DG DN Art:
And these are the 67mm filters that we recommend for the Leica APO-SL 50mm F2 ASPH:
Lens Mounts
Both the Sigma 50mm F1.4 DG DN Art and the Leica APO-SL 50mm F2 ASPH has the same Leica L lens mount. Some of the latest released cameras that are compatible with the Leica L lenses are Leica SL3, Panasonic S5 II and Panasonic S5 II X.
Sigma 50mm F1.4 DG DN Art is also available in Sony E mount.
Focal Range
Both lenses have the same focal range of
50mm but while Sigma 50mm F1.4 DG DN Art has the fastest aperture of
F1.4, the Leica APO-SL 50mm F2 ASPH's widest aperture value is
F2.