The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 85mm F1.4 EX DG HSM and the Sigma 50-150mm F2.8 EX DC OS 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 50-150mm F2.8 EX DC OS HSM is the longer of the two lenses at 198mm. The Sigma 85mm F1.4 EX DG HSM with a length of 88mm, is 110mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 86mm.
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 85mm F1.4 EX DG HSM weighs 725g, which means it is 625g (46%) lighter than the Sigma 50-150mm F2.8 EX DC OS HSM which has a weight of 1350g.
Filter Threads
Both the Sigma 85mm F1.4 EX DG HSM and the Sigma 50-150mm F2.8 EX DC OS HSM have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 85mm F1.4 EX DG HSM and the Sigma 50-150mm F2.8 EX DC OS HSM has the same Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Sigma 85mm F1.4 EX DG HSM is also available in the Canon EF , Nikon F (FX), Pentax KAF3 and Sony Alpha mounts.
Sigma 50-150mm F2.8 EX DC OS HSM is also available in Canon EF and Nikon F (DX) mounts.
Focal Range
Sigma 85mm F1.4 EX DG HSM is a prime lens with fixed focal lenght of 85mm.
On the other hand, the Sigma 50-150mm F2.8 EX DC OS HSM has a focal range of 50-150mm and 3.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-225mm when used on a APS-C / DX format camera.
