The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 35-100mm F2.8 and the Sigma 135mm F1.8 DG 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. Sigma 135mm F1.8 DG HSM is the longer of the two lenses at 141mm. The Tamron 35-100mm F2.8 with a length of 119mm, is 22mm shorter. Besides being longer, the Sigma 135mm F1.8 DG HSM also has a larger diameter of 91mm compared to the Tamron 35-100mm F2.8's 81mm diameter.
Below you can find a scaled side-by-side image of Tamron 35-100mm F2.8 and Sigma 135mm F1.8 DG HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 35-100mm F2.8 and the Sigma 135mm F1.8 DG HSM 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 35-100mm F2.8 weighs 565g, which means it is 565g (50%) lighter than the Sigma 135mm F1.8 DG HSM which has a weight of 1130g.
Filter Threads
The Tamron 35-100mm F2.8 has a filter size of 67mm whereas the Sigma 135mm F1.8 DG HSM 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 35-100mm F2.8:
And these are the 82mm filters that we recommend for the Sigma 135mm F1.8 DG HSM:
Lens Mounts
Both the Tamron 35-100mm F2.8 and the Sigma 135mm F1.8 DG HSM has the same Sony E lens mount . Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5 , Sony A7R VI and Sony A7 V .
Sigma SA , Nikon F (FX) and Canon EF mounts.
Focal Range
Tamron 35-100mm F2.8 has a focal range of 35-100mm and
2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
52.5 - 150mm .
On the other hand, the Sigma 135mm F1.8 DG HSM is a prime lens with fixed focal lenght of 135mm.
