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 50mm 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. Tamron 60mm f2 II LD IF Macro is the longer of the two lenses at 80mm. The Sigma 50mm F2.8 EX DG Macro with a length of 67mm, is 13mm shorter. Besides being longer, the Tamron 60mm f2 II LD IF Macro also has a larger diameter of 73mm compared to the Sigma 50mm F2.8 EX DG Macro's 71mm 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 50mm F2.8 EX DG Macro weighs 320g, 19% (80g) lighter than the Tamron 60mm f2 II LD IF Macro's weight of 400g.
Filter Threads
Both the Tamron 60mm f2 II LD IF Macro and the Sigma 50mm F2.8 EX DG Macro have the same Filter thread size of 55mm.
Below are links to the 55mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tamron 60mm f2 II LD IF Macro has the Nikon F (DX) lens mount whereas the Sigma 50mm F2.8 EX DG Macro 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 Canon EF and Sony Alpha mounts.
Sigma 50mm F2.8 EX DG Macro is also available in Canon EF , Pentax KAF, Sony Alpha 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 50mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75mm.