The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 14-28mm F4-5.6 and the Sigma 16-28mm F2.8 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. Sigma 16-28mm F2.8 L is the longer of the two lenses at 101mm. The Panasonic S 14-28mm F4-5.6 with a length of 90mm, is 11mm shorter. On the other hand, the Panasonic S 14-28mm F4-5.6 has a larger diameter of 84mm compared to the Sigma 16-28mm F2.8 L's 77mm diameter.
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Below you can find a scaled side-by-side image of Panasonic S 14-28mm F4-5.6 and Sigma 16-28mm F2.8 L 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. Panasonic S 14-28mm F4-5.6 weighs 345g, which means it is 105g (23%) lighter than the Sigma 16-28mm F2.8 L which has a weight of 450g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Leica L Mount for size comparison purposes.
Wideangle Lenses in Leica L Mount for Size Comparison
Filter Threads
The Panasonic S 14-28mm F4-5.6 has a filter size of 77mm whereas the Sigma 16-28mm F2.8 L has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Panasonic S 14-28mm F4-5.6:
And these are the 72mm filters that we recommend for the Sigma 16-28mm F2.8 L:
Lens Mounts
Both the Panasonic S 14-28mm F4-5.6 and the Sigma 16-28mm F2.8 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, Panasonic S5 II and Panasonic S5 II X.
Focal Range
Panasonic S 14-28mm F4-5.6 has a focal range of 14-28mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
21 - 42mm.
On the other hand, the 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.