The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 100mm f2.0 USM and the Tokina atx-i 100mm F2.8 FF 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. Tokina atx-i 100mm F2.8 FF Macro is the longer of the two lenses at 95mm. The Canon 100mm f2.0 USM with a length of 74mm, is 21mm shorter. On the other hand, the Canon 100mm f2.0 USM has a larger diameter of 75mm 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. Canon 100mm f2.0 USM weighs 460g, which means it is 70g (13%) lighter than the Tokina atx-i 100mm F2.8 FF Macro which has a weight of 530g.
Filter Threads
The Canon 100mm f2.0 USM has a filter size of 58mm whereas the Tokina atx-i 100mm F2.8 FF Macro has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Canon 100mm f2.0 USM:
And these are the 55mm filters that we recommend for the Tokina atx-i 100mm F2.8 FF Macro:
Lens Mounts
Both the Canon 100mm f2.0 USM and the Tokina atx-i 100mm F2.8 FF Macro 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.
Tokina atx-i 100mm F2.8 FF Macro is also available in Nikon F (FX) , Canon EF and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
100mm but while Canon 100mm f2.0 USM has the fastest aperture of
F2.0, the Tokina atx-i 100mm F2.8 FF Macro's widest aperture value is
F2.8.