The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 17-40mm f1.8 and the Panasonic S 24-105mm F4 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 24-105mm F4 is the longer of the two lenses at 118mm. The Sigma 17-40mm f1.8 with a length of 116mm, is 2mm shorter. Besides being longer, the Panasonic S 24-105mm F4 also has a larger diameter of 84mm compared to the Sigma 17-40mm f1.8's 73mm diameter.
Below you can find a scaled side-by-side image of Sigma 17-40mm f1.8 and Panasonic S 24-105mm F4 to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 17-40mm f1.8 and the Panasonic S 24-105mm F4 Size and Weight 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. Sigma 17-40mm f1.8 weighs 535g, which means it is 145g (21%) lighter than the Panasonic S 24-105mm F4 which has a weight of 680g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Leica L Mount for size comparison purposes.
Standard Lenses in Leica L Mount for Size Comparison
Filter Threads
The Sigma 17-40mm f1.8 has a filter size of 67mm whereas the Panasonic S 24-105mm F4 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 Sigma 17-40mm f1.8:
And these are the 77mm filters that we recommend for the Panasonic S 24-105mm F4:
Lens Mounts
Both the Sigma 17-40mm f1.8 and the Panasonic S 24-105mm F4 has the same Leica L lens mount . Some of the latest released cameras that are compatible with the Leica L lenses are Leica TL2 , Leica TL and Leica T Typ 701 .
Sigma 17-40mm f1.8 is also available in the Sony E , Fujifilm X and Canon RF mounts.
Focal Range
Sigma 17-40mm f1.8 has a focal range of 17-40mm and
2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
25.5-60mm when used on a APS-C / DX format camera.
On the other hand, the Panasonic S 24-105mm F4 has a focal range of 24-105mm and 4.4X zoom ratio .