The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 70-200 F2.8 and the Sigma 135mm F1.8 DG HSM A 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. Panasonic S 70-200 F2.8 is the longer of the two lenses at 209mm. The Sigma 135mm F1.8 DG HSM A with a length of 139mm, is 70mm shorter. Besides being longer, the Panasonic S 70-200 F2.8 also has a larger diameter of 94mm compared to the Sigma 135mm F1.8 DG HSM A's 91mm diameter.
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Below you can find a scaled side-by-side image of Panasonic S 70-200 F2.8 and Sigma 135mm F1.8 DG HSM A 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 135mm F1.8 DG HSM A weighs 1130g, 28% (440g) lighter than the Panasonic S 70-200 F2.8's weight of 1570g.
Filter Threads
Both the Panasonic S 70-200 F2.8 and the Sigma 135mm F1.8 DG HSM A have the same Filter thread size of 82mm.
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Panasonic S 70-200 F2.8 and the Sigma 135mm F1.8 DG HSM A 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 70-200 F2.8 has a focal range of 70-200mm and
2.9X zoom ratio .
On the other hand, the Sigma 135mm F1.8 DG HSM A is a prime lens with fixed focal lenght of 135mm.