The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 100-400mm F5-6.3 OS and the Tamron 50-400mm F4.5-6.3 VC 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 100-400mm F5-6.3 OS is the longer of the two lenses at 197mm. The Tamron 50-400mm F4.5-6.3 VC with a length of 183mm, is 14mm shorter. On the other hand, the Tamron 50-400mm F4.5-6.3 VC has a larger diameter of 89mm compared to the Sigma 100-400mm F5-6.3 OS's 86mm diameter.
Below you can find a scaled side-by-side image of Sigma 100-400mm F5-6.3 OS and Tamron 50-400mm F4.5-6.3 VC to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 100-400mm F5-6.3 OS and the Tamron 50-400mm F4.5-6.3 VC Size and Weight 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 OS weighs 1135g, which means it is 20g (1%) lighter than the Tamron 50-400mm F4.5-6.3 VC which has a weight of 1155g.
Filter Threads
Both the Sigma 100-400mm F5-6.3 OS and the Tamron 50-400mm F4.5-6.3 VC have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 100-400mm F5-6.3 OS has the Fujifilm X lens mount whereas the Tamron 50-400mm F4.5-6.3 VC has the Sony E lens mount . Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount.
Leica L and Sony E mounts.
Nikon Z mount.
Focal Range
Sigma 100-400mm F5-6.3 OS has a focal range of 100-400mm 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
150 - 600mm .
On the other hand, the Tamron 50-400mm F4.5-6.3 VC has a focal range of 50-400mm and 8.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75 - 600mm .
