The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 105mm F1.4 DG HSM A and the Sigma 70mm F2.8 DG Macro 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 105mm F1.4 DG HSM A is the longer of the two lenses at 132mm. The Sigma 70mm F2.8 DG Macro with a length of 106mm, is 26mm shorter. Besides being longer, the Sigma 105mm F1.4 DG HSM A also has a larger diameter of 116mm compared to the Sigma 70mm F2.8 DG Macro's 71mm 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 70mm F2.8 DG Macro weighs 515g, 68% (1130g) lighter than the Sigma 105mm F1.4 DG HSM A's weight of 1645g.
Filter Threads
The Sigma 105mm F1.4 DG HSM A has a filter size of 105mm whereas the Sigma 70mm F2.8 DG Macro has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 105mm filters that we recommend you to consider for the Sigma 105mm F1.4 DG HSM A:
And these are the 49mm filters that we recommend for the Sigma 70mm F2.8 DG Macro:
Lens Mounts
The Sigma 105mm F1.4 DG HSM A has the Leica L lens mount whereas the Sigma 70mm F2.8 DG Macro has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Sigma 70mm F2.8 DG Macro is also available in Canon EF , Nikon F (FX) and Sony E mounts.
Focal Range
Sigma 105mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 105mm.
On the other hand, the Sigma 70mm F2.8 DG Macro is a prime lens with fixed focal lenght of 70mm.
