The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 28-105mm f2.8 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 28-105mm f2.8 is the longer of the two lenses at 158mm. The Sigma 105mm F1.4 DG HSM A with a length of 132mm, is 26mm shorter. On the other hand, the Sigma 105mm F1.4 DG HSM A has a larger diameter of 116mm compared to the Sigma 28-105mm f2.8's 88mm 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 28-105mm f2.8 weighs 995g, which means it is 650g (39%) lighter than the Sigma 105mm F1.4 DG HSM A which has a weight of 1645g.
Filter Threads
The Sigma 28-105mm f2.8 has a filter size of 82mm whereas the Sigma 105mm F1.4 DG HSM A has a 105mm 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 28-105mm f2.8:
And these are the 105mm filters that we recommend for the Sigma 105mm F1.4 DG HSM A:
Lens Mounts
Both the Sigma 28-105mm f2.8 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 28-105mm f2.8 is also available in the Sony E mount.
Focal Range
Sigma 28-105mm f2.8 has a focal range of 28-105mm and
3.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42 - 157.5mm.
On the other hand, the Sigma 105mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 105mm.
