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 Panasonic S 16-35mm F4 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 16-35mm F4 with a length of 100mm, is 1mm shorter. On the other hand, the Panasonic S 16-35mm F4 has a larger diameter of 85mm 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 Sigma 16-28mm F2.8 L and Panasonic S 16-35mm F4 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 16-28mm F2.8 L weighs 450g, which means it is 50g (9%) lighter than the Panasonic S 16-35mm F4 which has a weight of 500g.
Filter Threads
The Sigma 16-28mm F2.8 L has a filter size of 72mm whereas the Panasonic S 16-35mm F4 has a 77mm 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 16-28mm F2.8 L:
And these are the 77mm filters that we recommend for the Panasonic S 16-35mm F4:
Lens Mounts
Both the Sigma 16-28mm F2.8 L and the Panasonic S 16-35mm F4 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 Panasonic S 16-35mm F4 has a focal range of 16-35mm and 2.2X zoom ratio .