The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-180mm F2.8 Di G2 and the Sigma 150mm F2.8 EX DG Macro 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. Tamron 70-180mm F2.8 Di G2 is the longer of the two lenses at 157mm. The Sigma 150mm F2.8 EX DG Macro HSM with a length of 137mm, is 20mm shorter. Besides being longer, the Tamron 70-180mm F2.8 Di G2 also has a larger diameter of 83mm compared to the Sigma 150mm F2.8 EX DG Macro HSM's 80mm 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 70-180mm F2.8 Di G2 weighs 855g, which means it is 40g (4%) lighter than the Sigma 150mm F2.8 EX DG Macro HSM which has a weight of 895g.
Filter Threads
The Tamron 70-180mm F2.8 Di G2 has a filter size of 67mm whereas the Sigma 150mm F2.8 EX DG Macro HSM has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 70-180mm F2.8 Di G2:
And these are the 72mm filters that we recommend for the Sigma 150mm F2.8 EX DG Macro HSM:
Lens Mounts
The Tamron 70-180mm F2.8 Di G2 has the Sony E lens mount whereas the Sigma 150mm F2.8 EX DG Macro HSM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tamron 70-180mm F2.8 Di G2 is also available in the Nikon Z mount.
Sigma 150mm F2.8 EX DG Macro HSM is also available in Nikon F (FX) , Four Thirds and Sigma SA mounts.
Focal Range
Tamron 70-180mm F2.8 Di G2 has a focal range of 70-180mm and
2.6X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105 - 270mm.
On the other hand, the Sigma 150mm F2.8 EX DG Macro HSM is a prime lens with fixed focal lenght of 150mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 240mm.
