The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 70mm F2.8 EX DG Macro and the Canon 100mm f2.8L Macro IS USM 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. Canon 100mm f2.8L Macro IS USM is the longer of the two lenses at 123mm. The Sigma 70mm F2.8 EX DG Macro with a length of 95mm, is 28mm shorter. Besides being longer, the Canon 100mm f2.8L Macro IS USM also has a larger diameter of 78mm compared to the Sigma 70mm F2.8 EX DG Macro's 76mm 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 70mm F2.8 EX DG Macro weighs 527g, which means it is 98g (15%) lighter than the Canon 100mm f2.8L Macro IS USM which has a weight of 625g.
Lens Mounts
The Sigma 70mm F2.8 EX DG Macro has the Sony Alpha lens mount whereas the Canon 100mm f2.8L Macro IS USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 70mm F2.8 EX DG Macro is also available in the Canon EF , Nikon F (FX), Pentax KAF and Sigma SA mounts.
Focal Range
Sigma 70mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 70mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105mm.
On the other hand, the Canon 100mm f2.8L Macro IS USM is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 160mm.
