The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 28-70mm F2.8 DG DN C and the Sigma 24-70mm F2.8 EX DG HSM 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 28-70mm F2.8 DG DN C is the longer of the two lenses at 102mm. The Sigma 24-70mm F2.8 EX DG HSM with a length of 95mm, is 7mm shorter. On the other hand, the Sigma 24-70mm F2.8 EX DG HSM has a larger diameter of 89mm compared to the Sigma 28-70mm F2.8 DG DN C's 72mm 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 28-70mm F2.8 DG DN C weighs 470g, which means it is 320g (40%) lighter than the Sigma 24-70mm F2.8 EX DG HSM which has a weight of 790g.
Filter Threads
The Sigma 28-70mm F2.8 DG DN C has a filter size of 67mm whereas the Sigma 24-70mm F2.8 EX DG HSM has a 82mm 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 28-70mm F2.8 DG DN C:
And these are the 82mm filters that we recommend for the Sigma 24-70mm F2.8 EX DG HSM:
Lens Mounts
The Sigma 28-70mm F2.8 DG DN C has the Leica L lens mount whereas the Sigma 24-70mm F2.8 EX DG HSM has the Pentax KAF3 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 , and for the Pentax KAF3 Mount.
Sigma 24-70mm F2.8 EX DG HSM is also available in Canon EF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Focal Range
Sigma 28-70mm F2.8 DG DN C has a focal range of 28-70mm and
2.5X zoom ratio .
On the other hand, the Sigma 24-70mm F2.8 EX DG HSM has a focal range of 24-70mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36 - 105mm.
