The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 60mm f2 II LD IF Macro and the Sigma 105mm F2.8 EX DG OS HSM 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 OS HSM is the longer of the two lenses at 127mm. The Tamron 60mm f2 II LD IF Macro with a length of 80mm, is 47mm shorter. Besides being longer, the Sigma 105mm F2.8 EX DG OS HSM also has a larger diameter of 78mm compared to the Tamron 60mm f2 II LD IF 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. Tamron 60mm f2 II LD IF Macro weighs 400g, which means it is 326g (44%) lighter than the Sigma 105mm F2.8 EX DG OS HSM which has a weight of 726g.
Filter Threads
The Tamron 60mm f2 II LD IF Macro has a filter size of 55mm whereas the Sigma 105mm F2.8 EX DG OS HSM 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 Tamron 60mm f2 II LD IF Macro:
And these are the 62mm filters that we recommend for the Sigma 105mm F2.8 EX DG OS HSM:
Lens Mounts
The Tamron 60mm f2 II LD IF Macro has the Nikon F (DX) lens mount whereas the Sigma 105mm F2.8 EX DG OS HSM has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Tamron 60mm f2 II LD IF Macro is also available in the Canon EF and Sony Alpha mounts.
Sigma 105mm F2.8 EX DG OS HSM is also available in Canon EF and Sigma SA mounts.
Focal Range
Tamron 60mm f2 II LD IF Macro is a prime lens with fixed focal lenght of 60mm which has an effective (full-frame 35mm equivalent) focal range of
90mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 105mm F2.8 EX DG OS HSM is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 157.5mm.