The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 100mm F2.8 Macro and the Tamron 90mm F2.8 Di III 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 100mm F2.8 Macro is the longer of the two lenses at 148mm. The Tamron 90mm F2.8 Di III with a length of 126mm, is 22mm shorter. Besides being longer, the Sony FE 100mm F2.8 Macro also has a larger diameter of 81mm compared to the Tamron 90mm F2.8 Di III's 79mm diameter.
Below you can find a scaled side-by-side image of Sony FE 100mm F2.8 Macro and Tamron 90mm F2.8 Di III to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 100mm F2.8 Macro and the Tamron 90mm F2.8 Di III 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 90mm F2.8 Di III weighs 630g, 2% (16g) lighter than the Sony FE 100mm F2.8 Macro's weight of 646g.
Below you can find the dimension and weight table of the Macro Prime Lenses in Sony E Mount for size comparison purposes.
Macro Sony E Mount
Filter Threads
Both the Sony FE 100mm F2.8 Macro and the Tamron 90mm F2.8 Di III 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
Both the Sony FE 100mm F2.8 Macro and the Tamron 90mm F2.8 Di III 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 .
Nikon Z mount.
Focal Range
Sony FE 100mm F2.8 Macro is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150mm .
On the other hand, the Tamron 90mm F2.8 Di III is a prime lens with fixed focal lenght of 90mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 135mm .
