The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 150-500mm F5-6.7 VC VXD and the Sigma 100-400mm F5-6.3 DG OS 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 150-500mm F5-6.7 VC VXD is the longer of the two lenses at 210mm. The Sigma 100-400mm F5-6.3 DG OS HSM with a length of 182mm, is 28mm shorter. Besides being longer, the Tamron 150-500mm F5-6.7 VC VXD also has a larger diameter of 93mm compared to the Sigma 100-400mm F5-6.3 DG OS HSM's 86mm 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 100-400mm F5-6.3 DG OS HSM weighs 1160g, 32% (564g) lighter than the Tamron 150-500mm F5-6.7 VC VXD's weight of 1724g.
Filter Threads
The Tamron 150-500mm F5-6.7 VC VXD has a filter size of 82mm whereas the Sigma 100-400mm F5-6.3 DG OS HSM 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 82mm filters that we recommend you to consider for the Tamron 150-500mm F5-6.7 VC VXD:
And these are the 67mm filters that we recommend for the Sigma 100-400mm F5-6.3 DG OS HSM:
Lens Mounts
The Tamron 150-500mm F5-6.7 VC VXD has the Sony E lens mount whereas the Sigma 100-400mm F5-6.3 DG OS HSM has the Sigma SA lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount and Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill for the Sigma SA Mount.
Tamron 150-500mm F5-6.7 VC VXD is also available in Fujifilm X and Nikon Z mounts.
Sigma 100-400mm F5-6.3 DG OS HSM is also available in Nikon F (FX) and Canon EF mounts.
Focal Range
Tamron 150-500mm F5-6.7 VC VXD has a focal range of 150-500mm and
3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
225 - 750mm.
On the other hand, the Sigma 100-400mm F5-6.3 DG OS HSM has a focal range of 100-400mm and 4.0X zoom ratio .