The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 25mm F2.8 2.5-5X Ultra Macro and the Tokina Firin 20mm F2 FE MF 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. Tokina Firin 20mm F2 FE MF is the longer of the two lenses at 82mm. The Venus 25mm F2.8 2.5-5X Ultra Macro with a length of 65mm, is 17mm shorter. On the other hand, the Venus 25mm F2.8 2.5-5X Ultra Macro has a larger diameter of 82mm compared to the Tokina Firin 20mm F2 FE MF's 69mm diameter.
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. Venus 25mm F2.8 2.5-5X Ultra Macro weighs 400g, which means it is 90g (18%) lighter than the Tokina Firin 20mm F2 FE MF which has a weight of 490g.
Lens Mounts
Both the Venus 25mm F2.8 2.5-5X Ultra Macro and the Tokina Firin 20mm F2 FE MF has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Venus 25mm F2.8 2.5-5X Ultra Macro is also available in Canon EF , Nikon F (DX) and Pentax KAF2 mounts.
Tokina Firin 20mm F2 FE MF is also available in Sony E mount.
Focal Range
Venus 25mm F2.8 2.5-5X Ultra Macro is a prime lens with fixed focal lenght of 25mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
37.5mm.
On the other hand, the Tokina Firin 20mm F2 FE MF 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.