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 105mm F2.8 EX DG Macro 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. Sony FE 90mm F2.8 Macro G OSS is the longer of the two lenses at 131mm. The Sigma 105mm F2.8 EX DG Macro with a length of 98mm, is 33mm shorter. Besides being longer, the Sony FE 90mm F2.8 Macro G OSS also has a larger diameter of 79mm compared to the Sigma 105mm F2.8 EX DG Macro's 74mm 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 105mm F2.8 EX DG Macro weighs 460g, 23% (142g) lighter than the Sony FE 90mm F2.8 Macro G OSS's weight of 602g.
Filter Threads
Both the Sony FE 90mm F2.8 Macro G OSS and the Sigma 105mm F2.8 EX DG Macro have the same Filter thread size of 62mm.
Below are links to the 62mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sony FE 90mm F2.8 Macro G OSS has the Sony E lens mount whereas the Sigma 105mm F2.8 EX DG Macro has the Sigma SA 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 Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Sigma 105mm F2.8 EX DG Macro is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha and Four Thirds 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 105mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 105mm.
