The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 17-55mm f2.8 IS USM and the Panasonic S 24-70mm F2.8 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 24-70mm F2.8 is the longer of the two lenses at 140mm. The Canon 17-55mm f2.8 IS USM with a length of 111mm, is 29mm shorter. Besides being longer, the Panasonic S 24-70mm F2.8 also has a larger diameter of 91mm compared to the Canon 17-55mm f2.8 IS USM's 84mm 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 17-55mm f2.8 IS USM weighs 645g, which means it is 290g (31%) lighter than the Panasonic S 24-70mm F2.8 which has a weight of 935g.
Filter Threads
The Canon 17-55mm f2.8 IS USM has a filter size of 77mm whereas the Panasonic S 24-70mm F2.8 has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Canon 17-55mm f2.8 IS USM:
And these are the 82mm filters that we recommend for the Panasonic S 24-70mm F2.8:
Lens Mounts
The Canon 17-55mm f2.8 IS USM has the Canon EF-S lens mount whereas the Panasonic S 24-70mm F2.8 has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF-S Mount and Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Focal Range
Canon 17-55mm f2.8 IS USM has a focal range of 17-55mm and
3.2X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27.2-88mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic S 24-70mm F2.8 has a focal range of 24-70mm and 2.9X zoom ratio .
