The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 150-600mm F5-6.3 DG DN OS and the Tamron 70-180mm F2.8 Di 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 150-600mm F5-6.3 DG DN OS is the longer of the two lenses at 266mm. The Tamron 70-180mm F2.8 Di with a length of 149mm, is 117mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG DN OS also has a larger diameter of 109mm compared to the Tamron 70-180mm F2.8 Di's 81mm diameter.
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Below you can find a scaled side-by-side image of Sigma 150-600mm F5-6.3 DG DN OS and Tamron 70-180mm F2.8 Di to get a better idea of how their sizes compare in real life.
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 weighs 815g, 61% (1285g) lighter than the Sigma 150-600mm F5-6.3 DG DN OS's weight of 2100g.
Filter Threads
The Sigma 150-600mm F5-6.3 DG DN OS has a filter size of 95mm whereas the Tamron 70-180mm F2.8 Di has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 95mm filters that we recommend you to consider for the Sigma 150-600mm F5-6.3 DG DN OS:
And these are the 67mm filters that we recommend for the Tamron 70-180mm F2.8 Di:
Lens Mounts
Both the Sigma 150-600mm F5-6.3 DG DN OS and the Tamron 70-180mm F2.8 Di has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Sigma 150-600mm F5-6.3 DG DN OS is also available in Leica L mount.
Focal Range
Sigma 150-600mm F5-6.3 DG DN OS has a focal range of 150-600mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
225 - 900mm.
On the other hand, the Tamron 70-180mm F2.8 Di 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.