The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 85mm F1.4 DG HSM and the Schneider PC 28mm f2.8 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 Schneider PC 28mm f2.8 with a length of 89mm, is 37mm shorter. Besides being longer, the Sigma 85mm F1.4 DG HSM also has a larger diameter of 95mm compared to the Schneider PC 28mm f2.8's 75mm 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. Schneider PC 28mm f2.8 weighs 565g, 50% (565g) lighter than the Sigma 85mm F1.4 DG HSM's weight of 1130g.
Filter Threads
The Sigma 85mm F1.4 DG HSM has a filter size of 86mm whereas the Schneider PC 28mm f2.8 has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 86mm filters that we recommend you to consider for the Sigma 85mm F1.4 DG HSM:
And these are the 67mm filters that we recommend for the Schneider PC 28mm f2.8:
Lens Mounts
The Sigma 85mm F1.4 DG HSM has the Sigma SA lens mount whereas the Schneider PC 28mm f2.8 has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Sigma 85mm F1.4 DG HSM is also available in the Nikon F (FX) and Canon EF mounts.
Schneider PC 28mm f2.8 is also available in Canon EF , Pentax KAF and Nikon F (FX) mounts.
Focal Range
Sigma 85mm F1.4 DG HSM is a prime lens with fixed focal lenght of 85mm.
On the other hand, the Schneider PC 28mm f2.8 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.
