The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16-28mm F2.8 L and the Leica 16-35mm F3.5-4.5 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. Leica 16-35mm F3.5-4.5 ASPH is the longer of the two lenses at 238mm. The Sigma 16-28mm F2.8 L with a length of 101mm, is 137mm shorter. Besides being longer, the Leica 16-35mm F3.5-4.5 ASPH also has a larger diameter of 88mm compared to the Sigma 16-28mm F2.8 L's 77mm 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. Sigma 16-28mm F2.8 L weighs 450g, which means it is 540g (54%) lighter than the Leica 16-35mm F3.5-4.5 ASPH which has a weight of 990g.
Lens Mounts
Both the Sigma 16-28mm F2.8 L and the Leica 16-35mm F3.5-4.5 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.
Focal Range
Sigma 16-28mm F2.8 L has a focal range of 16-28mm and
1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
24 - 42mm.
On the other hand, the Leica 16-35mm F3.5-4.5 ASPH has a focal range of 16-35mm and 2.2X zoom ratio .