The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 40mm F1.4 DG HSM A 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. Sigma 40mm F1.4 DG HSM A is the longer of the two lenses at 155mm. The Panasonic S 24-105mm F4 with a length of 118mm, is 37mm shorter. Besides being longer, the Sigma 40mm F1.4 DG HSM A also has a larger diameter of 88mm compared to the Panasonic S 24-105mm F4'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. Panasonic S 24-105mm F4 weighs 680g, 47% (615g) lighter than the Sigma 40mm F1.4 DG HSM A's weight of 1295g.
Filter Threads
The Sigma 40mm F1.4 DG HSM A has a filter size of 82mm 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 82mm filters that we recommend you to consider for the Sigma 40mm F1.4 DG HSM A:
And these are the 77mm filters that we recommend for the Panasonic S 24-105mm F4:
Lens Mounts
Both the Sigma 40mm F1.4 DG HSM A 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 SL3-P, Panasonic S1 II and Panasonic S1 IIE.
Sigma 40mm F1.4 DG HSM A is also available in the Canon EF , Nikon F (FX), Sigma SA and Sony E mounts.
Focal Range
Sigma 40mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 40mm.
On the other hand, the Panasonic S 24-105mm F4 has a focal range of 24-105mm and 4.4X zoom ratio .