The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 24mm F2.8 Di III OSD M1:2 and the Tamron 20mm F2.8 Di III OSD M1:2 for their suitability to various photography scenarios:
Size and Weight Comparison
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 24mm F2.8 Di III OSD M1:2 weighs 215g, which means it is 5g (2%) lighter than the Tamron 20mm F2.8 Di III OSD M1:2 which has a weight of 220g.
Filter Threads
Both the Tamron 24mm F2.8 Di III OSD M1:2 and the Tamron 20mm F2.8 Di III OSD M1:2 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 Tamron 24mm F2.8 Di III OSD M1:2 and the Tamron 20mm F2.8 Di III OSD M1:2 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.
Focal Range
Tamron 24mm F2.8 Di III OSD M1:2 is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36mm.
On the other hand, the Tamron 20mm F2.8 Di III OSD M1:2 is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 30mm.
