The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina atx-i 100mm F2.8 FF Macro 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. Sigma 105mm F2.8 EX DG Macro is the longer of the two lenses at 98mm. The Tokina atx-i 100mm F2.8 FF Macro with a length of 95mm, is 3mm shorter. Besides being longer, the Sigma 105mm F2.8 EX DG Macro also has a larger diameter of 74mm compared to the Tokina atx-i 100mm F2.8 FF Macro's 73mm 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, 13% (70g) lighter than the Tokina atx-i 100mm F2.8 FF Macro's weight of 530g.
Filter Threads
The Tokina atx-i 100mm F2.8 FF Macro has a filter size of 55mm whereas the Sigma 105mm F2.8 EX DG Macro has a 62mm 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 Tokina atx-i 100mm F2.8 FF Macro:
And these are the 62mm filters that we recommend for the Sigma 105mm F2.8 EX DG Macro:
Lens Mounts
The Tokina atx-i 100mm F2.8 FF Macro has the Nikon F (FX) lens mount whereas the Sigma 105mm F2.8 EX DG Macro has the Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Tokina atx-i 100mm F2.8 FF Macro is also available in the Canon EF , Nikon F (FX) and Canon EF mounts.
Sigma 105mm F2.8 EX DG Macro is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Tokina atx-i 100mm F2.8 FF Macro is a prime lens with fixed focal lenght of 100mm.
On the other hand, the Sigma 105mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 105mm.
