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 Sony FE 28-70mm F2.0 GM 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. Sony FE 28-70mm F2.0 GM is the longer of the two lenses at 140mm. The Tamron 35-100mm F2.8 with a length of 122mm, is 18mm shorter. Besides being longer, the Sony FE 28-70mm F2.0 GM also has a larger diameter of 93mm 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 Sony FE 28-70mm F2.0 GM to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 35-100mm F2.8 and the Sony FE 28-70mm F2.0 GM 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 575g, which means it is 343g (37%) lighter than the Sony FE 28-70mm F2.0 GM which has a weight of 918g.
Filter Threads
The Tamron 35-100mm F2.8 has a filter size of 67mm whereas the Sony FE 28-70mm F2.0 GM has a 86mm 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 86mm filters that we recommend for the Sony FE 28-70mm F2.0 GM:
Lens Mounts
The Tamron 35-100mm F2.8 has the Nikon Z lens mount whereas the Sony FE 28-70mm F2.0 GM has the Sony E lens mount . Some of the latest released cameras that are compatible with these mounts are Nikon ZR , Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount.
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 Sony FE 28-70mm F2.0 GM has a focal range of 28-70mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42 - 105mm .
