The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 28mm F1.4 DG HSM A and the Sigma 85mm F1.4 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 85mm F1.4 DG HSM is the longer of the two lenses at 126mm. The Sigma 28mm F1.4 DG HSM A with a length of 108mm, is 18mm shorter. Besides being longer, the Sigma 85mm F1.4 DG HSM also has a larger diameter of 95mm compared to the Sigma 28mm F1.4 DG HSM A's 83mm 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 28mm F1.4 DG HSM A weighs 925g, which means it is 205g (18%) lighter than the Sigma 85mm F1.4 DG HSM which has a weight of 1130g.
Filter Threads
The Sigma 28mm F1.4 DG HSM A has a filter size of 77mm whereas the Sigma 85mm F1.4 DG HSM has a 86mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Sigma 28mm F1.4 DG HSM A:
And these are the 86mm filters that we recommend for the Sigma 85mm F1.4 DG HSM:
Lens Mounts
The Sigma 28mm F1.4 DG HSM A has the Sony E lens mount whereas the Sigma 85mm F1.4 DG HSM has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 28mm F1.4 DG HSM A is also available in the Canon EF , Nikon F (FX), Sigma SA and Leica L mounts.
Sigma 85mm F1.4 DG HSM is also available in Sigma SA and Canon EF mounts.
Focal Range
Sigma 28mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
42mm.
On the other hand, the Sigma 85mm F1.4 DG HSM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 127.5mm.
