The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 18mm F1.8 and the Panasonic S 35mm F1.8 for their suitability to various photography scenarios:
Size and Weight Comparison
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Below you can find a scaled side-by-side image of Panasonic S 18mm F1.8 and Panasonic S 35mm F1.8 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 35mm F1.8 weighs 295g, 13% (45g) lighter than the Panasonic S 18mm F1.8's weight of 340g.
Filter Threads
Both the Panasonic S 18mm F1.8 and the Panasonic S 35mm F1.8 have the same Filter thread size of 67mm.
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Panasonic S 18mm F1.8 and the Panasonic S 35mm F1.8 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 18mm F1.8 is a prime lens with fixed focal lenght of 18mm.
On the other hand, the Panasonic S 35mm F1.8 is a prime lens with fixed focal lenght of 35mm.