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 Canon 24-70mm f2.8L II USM 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 Canon 24-70mm f2.8L II USM with a length of 113mm, is 96mm shorter. Besides being longer, the Panasonic S 70-200 F2.8 also has a larger diameter of 94mm compared to the Canon 24-70mm f2.8L II USM's 89mm 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. Canon 24-70mm f2.8L II USM weighs 805g, 48% (765g) 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 Canon 24-70mm f2.8L II USM 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
The Panasonic S 70-200 F2.8 has the Leica L lens mount whereas the Canon 24-70mm f2.8L II USM has the Canon EF 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 Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
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 Canon 24-70mm f2.8L II USM has a focal range of 24-70mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 38.4 - 112mm.