The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Mitakon 80mm f1.6 GFX and the Irix 45mm F1.4 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. Mitakon 80mm f1.6 GFX weighs 850g, which means it is 75g (8%) lighter than the Irix 45mm F1.4 which has a weight of 925g.
Filter Threads
Both the Mitakon 80mm f1.6 GFX and the Irix 45mm F1.4 have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Mitakon 80mm f1.6 GFX has the Hasselblad X lens mount whereas the Irix 45mm F1.4 has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm GFX Eterna 55, Fujifilm GFX 100S II and Fujifilm GFX 100 II for the Hasselblad X Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Irix 45mm F1.4 is also available in Canon EF and Pentax KAF2 mounts.
Focal Range
Mitakon 80mm f1.6 GFX is a prime lens with fixed focal lenght of 80mm.
On the other hand, the Irix 45mm F1.4 is a prime lens with fixed focal lenght of 45mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 67.5mm.
