The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 50mm F2.0 Air and the Viltrox AF 40mm f2.5 Z 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. Viltrox AF 50mm F2.0 Air is the longer of the two lenses at 59mm. The Viltrox AF 40mm f2.5 Z with a length of 56mm, is 3mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 68mm.
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. Viltrox AF 40mm f2.5 Z weighs 180g, 18% (40g) lighter than the Viltrox AF 50mm F2.0 Air's weight of 220g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Nikon Z Mount for size comparison purposes.
Standard Lenses in Nikon Z Mount for Size Comparison
Filter Threads
The Viltrox AF 50mm F2.0 Air has a filter size of 58mm whereas the Viltrox AF 40mm f2.5 Z has a 52mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Viltrox AF 50mm F2.0 Air:
And these are the 52mm filters that we recommend for the Viltrox AF 40mm f2.5 Z:
Lens Mounts
Both the Viltrox AF 50mm F2.0 Air and the Viltrox AF 40mm f2.5 Z has the same Nikon Z lens mount. Some of the latest released cameras that are compatible with the Nikon Z lenses are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z.
Viltrox AF 50mm F2.0 Air is also available in the Sony E mount.
Focal Range
Viltrox AF 50mm F2.0 Air is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75mm.
On the other hand, the Viltrox AF 40mm f2.5 Z is a prime lens with fixed focal lenght of 40mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 60mm.
