The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F2.8 EX DG Macro and the Canon EF 50mm f/1.8 STM 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 50mm F2.8 EX DG Macro is the longer of the two lenses at 67mm. The Canon EF 50mm f/1.8 STM with a length of 39mm, is 28mm shorter. Besides being longer, the Sigma 50mm F2.8 EX DG Macro also has a larger diameter of 71mm compared to the Canon EF 50mm f/1.8 STM's 69mm 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. Canon EF 50mm f/1.8 STM weighs 159g, 50% (161g) lighter than the Sigma 50mm F2.8 EX DG Macro's weight of 320g.
Filter Threads
The Sigma 50mm F2.8 EX DG Macro has a filter size of 55mm whereas the Canon EF 50mm f/1.8 STM has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 50mm F2.8 EX DG Macro:
And these are the 49mm filters that we recommend for the Canon EF 50mm f/1.8 STM:
Lens Mounts
Both the Sigma 50mm F2.8 EX DG Macro and the Canon EF 50mm f/1.8 STM 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 50mm F2.8 EX DG Macro is also available in Pentax KAF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
50mm but while Sigma 50mm F2.8 EX DG Macro has the fastest aperture of
F2.8, the Canon EF 50mm f/1.8 STM's widest aperture value is
F1.8.