The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Irix 45mm F1.4 and the Nikon 24-70mm F2.8E ED VR 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. Irix 45mm F1.4 weighs 925g, which means it is 145g (13%) lighter than the Nikon 24-70mm F2.8E ED VR which has a weight of 1070g.
Filter Threads
The Irix 45mm F1.4 has a filter size of 77mm whereas the Nikon 24-70mm F2.8E ED VR has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Irix 45mm F1.4:
And these are the 82mm filters that we recommend for the Nikon 24-70mm F2.8E ED VR:
Lens Mounts
Both the Irix 45mm F1.4 and the Nikon 24-70mm F2.8E ED VR has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Irix 45mm F1.4 is also available in the Canon EF and Pentax KAF2 mounts.
Focal Range
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.
On the other hand, the Nikon 24-70mm F2.8E ED VR has a focal range of 24-70mm 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 36 - 105mm.
