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 OS HSM C and the Tamron AF 70-300mm f4-5.6 LD 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 OS HSM C is the longer of the two lenses at 260mm. The Tamron AF 70-300mm f4-5.6 LD with a length of 117mm, is 143mm shorter. Besides being longer, the Sigma 150-600mm F5-6.3 DG OS HSM C also has a larger diameter of 105mm compared to the Tamron AF 70-300mm f4-5.6 LD's 77mm 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 AF 70-300mm f4-5.6 LD weighs 435g, 77% (1495g) lighter than the Sigma 150-600mm F5-6.3 DG OS HSM C's weight of 1930g.
Filter Threads
The Sigma 150-600mm F5-6.3 DG OS HSM C has a filter size of 95mm whereas the Tamron AF 70-300mm f4-5.6 LD 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 95mm filters that we recommend you to consider for the Sigma 150-600mm F5-6.3 DG OS HSM C:
And these are the 62mm filters that we recommend for the Tamron AF 70-300mm f4-5.6 LD:
Lens Mounts
Both the Sigma 150-600mm F5-6.3 DG OS HSM C and the Tamron AF 70-300mm f4-5.6 LD has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Sigma 150-600mm F5-6.3 DG OS HSM C is also available in Canon EF , Nikon F (FX) and Sigma SA mounts.
Tamron AF 70-300mm f4-5.6 LD is also available in Canon EF , Nikon F (FX) and Pentax KAF mounts.
Focal Range
Sigma 150-600mm F5-6.3 DG OS HSM C 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 AF 70-300mm f4-5.6 LD has a focal range of 70-300mm 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 105 - 450mm.