The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-210mm F4 Di VC USD and the Sigma 50-100mm F1.8 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 70-210mm F4 Di VC USD is the longer of the two lenses at 175mm. The Sigma 50-100mm F1.8 A with a length of 171mm, is 4mm shorter. On the other hand, the Sigma 50-100mm F1.8 A has a larger diameter of 94mm compared to the Tamron 70-210mm F4 Di VC USD's 76mm diameter.
Below you can find a scaled side-by-side image of Tamron 70-210mm F4 Di VC USD and Sigma 50-100mm F1.8 A to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 70-210mm F4 Di VC USD and the Sigma 50-100mm F1.8 A 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. Tamron 70-210mm F4 Di VC USD weighs 859g, which means it is 631g (42%) lighter than the Sigma 50-100mm F1.8 A which has a weight of 1490g.
Filter Threads
The Tamron 70-210mm F4 Di VC USD has a filter size of 67mm whereas the Sigma 50-100mm F1.8 A has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 70-210mm F4 Di VC USD:
And these are the 82mm filters that we recommend for the Sigma 50-100mm F1.8 A:
Lens Mounts
The Tamron 70-210mm F4 Di VC USD has the Nikon F (FX) lens mount whereas the Sigma 50-100mm F1.8 A has the Nikon F (DX) lens mount . Some of the latest released cameras that are compatible with these mounts are Nikon D6 , Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Nikon D3500 , Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Canon EF and Sigma SA mounts.
Focal Range
Tamron 70-210mm F4 Di VC USD has a focal range of 70-210mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105 - 315mm .
On the other hand, the Sigma 50-100mm F1.8 A has a focal range of 50-100mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-150mm when used on a APS-C / DX format camera.
