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 85mm F1.4 DG DN 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 28-70mm F2.8 DG DN C is the longer of the two lenses at 102mm. The Sigma 85mm F1.4 DG DN A with a length of 94mm, is 8mm shorter. On the other hand, the Sigma 85mm F1.4 DG DN A has a larger diameter of 83mm compared to the Sigma 28-70mm F2.8 DG DN C's 72mm diameter.
Below you can find a scaled side-by-side image of Sigma 28-70mm F2.8 DG DN C and Sigma 85mm F1.4 DG DN A to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 28-70mm F2.8 DG DN C and the Sigma 85mm F1.4 DG DN A Size and Weight 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 160g (25%) lighter than the Sigma 85mm F1.4 DG DN A which has a weight of 630g.
Filter Threads
The Sigma 28-70mm F2.8 DG DN C has a filter size of 67mm whereas the Sigma 85mm F1.4 DG DN A 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 67mm filters that we recommend you to consider for the Sigma 28-70mm F2.8 DG DN C:
And these are the 77mm filters that we recommend for the Sigma 85mm F1.4 DG DN A:
Lens Mounts
Both the Sigma 28-70mm F2.8 DG DN C and the Sigma 85mm F1.4 DG DN 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 .
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 85mm F1.4 DG DN A is a prime lens with fixed focal lenght of 85mm.