The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 50mm F2.8 Macro and the Sigma 50mm F2.8 EX DG Macro for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sigma 50mm F2.8 EX DG Macro is the longer of the two lenses at 67mm. The Sony 50mm F2.8 Macro with a length of 60mm is 7mm shorter. On the other hand, the Sony 50mm F2.8 Macro has a larger diameter of 72mm compared to Sigma 50mm F2.8 EX DG Macro's 71mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony 50mm F2.8 Macro weighs 295g, which means it is 25g (7%) lighter than the Sigma 50mm F2.8 EX DG Macro which has a weight of 320g.
Below you can find the dimension and weight table of the 'Macro Prime Lenses in Sony Alpha Mount for size comparison purposes.
Macro Prime Lenses in Sony Alpha Mount for Size Comparison
Lens Mounts
Both Sony 50mm F2.8 Macro and Sigma 50mm F2.8 EX DG Macro has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A68, Sony A77 II and Sony A58.
Sigma 50mm F2.8 EX DG Macro is also available in Canon EF , Pentax KAF, Sigma SA and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of 50mm and the fastest aperture of F2.8.