The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 28-70mm F3.5-5.6 II and the Panasonic S 20-60mm F3.5-5.6 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 20-60mm F3.5-5.6 is the longer of the two lenses at 87mm. The Sony FE 28-70mm F3.5-5.6 II with a length of 83mm, is 4mm shorter. Besides being longer, the Panasonic S 20-60mm F3.5-5.6 also has a larger diameter of 77mm compared to the Sony FE 28-70mm F3.5-5.6 II's 73mm 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. Sony FE 28-70mm F3.5-5.6 II weighs 295g, which means it is 55g (15%) lighter than the Panasonic S 20-60mm F3.5-5.6 which has a weight of 350g.
Filter Threads
The Sony FE 28-70mm F3.5-5.6 II has a filter size of 55mm whereas the Panasonic S 20-60mm F3.5-5.6 has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sony FE 28-70mm F3.5-5.6 II:
And these are the 67mm filters that we recommend for the Panasonic S 20-60mm F3.5-5.6:
Lens Mounts
The Sony FE 28-70mm F3.5-5.6 II has the Sony E lens mount whereas the Panasonic S 20-60mm F3.5-5.6 has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Focal Range
Sony FE 28-70mm F3.5-5.6 II has a focal range of 28-70mm and
2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 105mm.
On the other hand, the Panasonic S 20-60mm F3.5-5.6 has a focal range of 20-60mm and 3.0X zoom ratio .
