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 Rokinon 85mm F1.4 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 Rokinon 85mm F1.4 with a length of 75mm, is 51mm shorter. Besides being longer, the Sigma 85mm F1.4 DG HSM also has a larger diameter of 95mm compared to the Rokinon 85mm F1.4's 78mm 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. Rokinon 85mm F1.4 weighs 539g, 52% (591g) lighter than the Sigma 85mm F1.4 DG HSM's weight of 1130g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon EF Mount for size comparison purposes.
Telephoto Lenses in Canon EF Mount for Size Comparison
Filter Threads
The Sigma 85mm F1.4 DG HSM has a filter size of 86mm whereas the Rokinon 85mm F1.4 has a 72mm 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 72mm filters that we recommend for the Rokinon 85mm F1.4:
Lens Mounts
Both the Sigma 85mm F1.4 DG HSM and the Rokinon 85mm F1.4 has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Sigma 85mm F1.4 DG HSM is also available in Sigma SA and Nikon F (FX) mounts.
Rokinon 85mm F1.4 is also available in Four Thirds , Pentax KAF, Sony Alpha, Samsung NX and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
85mm and the fastest aperture of
F1.4.