The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 90mm F2.8 Macro G OSS and the Sigma APO 180mm F2.8 EX DG 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 APO 180mm F2.8 EX DG OS HSM is the longer of the two lenses at 204mm. The Sony FE 90mm F2.8 Macro G OSS with a length of 131mm, is 73mm shorter. Besides being longer, the Sigma APO 180mm F2.8 EX DG OS HSM also has a larger diameter of 95mm compared to the Sony FE 90mm F2.8 Macro G OSS's 79mm 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. Sony FE 90mm F2.8 Macro G OSS weighs 602g, which means it is 1038g (63%) lighter than the Sigma APO 180mm F2.8 EX DG OS HSM which has a weight of 1640g.
Filter Threads
The Sony FE 90mm F2.8 Macro G OSS has a filter size of 62mm whereas the Sigma APO 180mm F2.8 EX DG OS 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 62mm filters that we recommend you to consider for the Sony FE 90mm F2.8 Macro G OSS:
And these are the 86mm filters that we recommend for the Sigma APO 180mm F2.8 EX DG OS HSM:
Lens Mounts
The Sony FE 90mm F2.8 Macro G OSS has the Sony E lens mount whereas the Sigma APO 180mm F2.8 EX DG OS HSM has the Sony Alpha 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 Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Sigma APO 180mm F2.8 EX DG OS HSM is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Focal Range
Sony FE 90mm F2.8 Macro G OSS is a prime lens with fixed focal lenght of 90mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
135mm.
On the other hand, the Sigma APO 180mm F2.8 EX DG OS HSM is a prime lens with fixed focal lenght of 180mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 270mm.
