The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 14mm F1.4 DG DN and the Sigma 105mm F1.4 DG HSM A 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 14mm F1.4 DG DN is the longer of the two lenses at 150mm. The Sigma 105mm F1.4 DG HSM A with a length of 132mm, is 18mm shorter. On the other hand, the Sigma 105mm F1.4 DG HSM A has a larger diameter of 116mm compared to the Sigma 14mm F1.4 DG DN's 101mm 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. Sigma 14mm F1.4 DG DN weighs 1170g, which means it is 475g (28%) lighter than the Sigma 105mm F1.4 DG HSM A which has a weight of 1645g.
Lens Mounts
Both the Sigma 14mm F1.4 DG DN and the Sigma 105mm F1.4 DG HSM A 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 14mm F1.4 DG DN is also available in the Sony E mount.
Focal Range
Sigma 14mm F1.4 DG DN is a prime lens with fixed focal lenght of 14mm.
On the other hand, the Sigma 105mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 105mm.