The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Panasonic S 20-60mm F3.5-5.6 and the Sony 24-70mm F2.8 ZA SSM 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. Sony 24-70mm F2.8 ZA SSM is the longer of the two lenses at 111mm. The Panasonic S 20-60mm F3.5-5.6 with a length of 87mm, is 24mm shorter. Besides being longer, the Sony 24-70mm F2.8 ZA SSM also has a larger diameter of 83mm compared to the Panasonic S 20-60mm F3.5-5.6's 77mm 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. Panasonic S 20-60mm F3.5-5.6 weighs 350g, which means it is 605g (63%) lighter than the Sony 24-70mm F2.8 ZA SSM which has a weight of 955g.
Filter Threads
The Panasonic S 20-60mm F3.5-5.6 has a filter size of 67mm whereas the Sony 24-70mm F2.8 ZA SSM 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 67mm filters that we recommend you to consider for the Panasonic S 20-60mm F3.5-5.6:
And these are the 77mm filters that we recommend for the Sony 24-70mm F2.8 ZA SSM:
Lens Mounts
The Panasonic S 20-60mm F3.5-5.6 has the Leica L lens mount whereas the Sony 24-70mm F2.8 ZA SSM has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3, Panasonic S5 II and Panasonic S5 II X for the Leica L Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Focal Range
Panasonic S 20-60mm F3.5-5.6 has a focal range of 20-60mm and
3.0X zoom ratio .
On the other hand, the Sony 24-70mm F2.8 ZA SSM has a focal range of 24-70mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36 - 105mm.