The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 35-150mm F2-2.8 and the Sigma 40mm F1.4 DG HSM A 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 35-150mm F2-2.8 is the longer of the two lenses at 158mm. The Sigma 40mm F1.4 DG HSM A with a length of 131mm, is 27mm shorter. Besides being longer, the Tamron 35-150mm F2-2.8 also has a larger diameter of 89mm compared to the Sigma 40mm F1.4 DG HSM A's 88mm 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 35-150mm F2-2.8 weighs 1165g, which means it is 35g (2%) lighter than the Sigma 40mm F1.4 DG HSM A which has a weight of 1200g.
Filter Threads
Both the Tamron 35-150mm F2-2.8 and the Sigma 40mm F1.4 DG HSM A have the same Filter thread size of 82mm.
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Tamron 35-150mm F2-2.8 has the Sony E lens mount whereas the Sigma 40mm F1.4 DG HSM A 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 35-150mm F2-2.8 is also available in the Nikon Z mount.
Sigma 40mm F1.4 DG HSM A is also available in Nikon F (FX) , Sigma SA, Sony E and Leica L mounts.
Focal Range
Tamron 35-150mm F2-2.8 has a focal range of 35-150mm and
4.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5 - 225mm.
On the other hand, the Sigma 40mm F1.4 DG HSM A is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 64mm.
