What is the optical construction and focal length?
10 elements in 6 groups, including 1 ED (Extra-low Dispersion) lens and 3 high-refractive-index lenses. Focal length: 40mm, covering full-frame sensors. Angle of view: 57.8°. HD nano multi-layer coating applied to reduce ghosting and flare.
Which Nikon Z cameras is this lens compatible with?
Compatible with all Nikon Z-mount cameras, including Z5, Z6, Z6 II, Z6 III, Z7, Z7 II, Z8, Z9, Zf, Z50, Z50 II, Z30, and Zfc. On APS-C Z-mount bodies, the effective focal length is 60mm equivalent.
What is the aperture range and diaphragm?
Maximum aperture: f/2.5. Minimum aperture: f/16. 7 rounded diaphragm blades for smooth, natural bokeh. Electronic aperture control via the camera body (no aperture ring on the lens).
What is the autofocus system and minimum focus distance?
STM (Stepping Motor) autofocus — fast, precise, and near-silent, ideal for both stills and video. Supports eye AF and face detection when paired with compatible Nikon Z bodies. Minimum focus distance: 0.35m (35cm). Maximum magnification: 0.12x.
What are the physical dimensions and weight?
Diameter: 65mm. Length: only 28mm. Weight: approximately 167g. Filter thread: 52mm. The lens features an aluminium alloy mount for durability and a metal focus ring for manual focus control. Available in black and silver colourways.
What are the standout features of this lens?
The Viltrox AF 40mm F2.5 Air is an ultra-compact full-frame prime lens designed for Nikon Z-mount cameras. Its 40mm focal length offers a natural field of view ideal for street photography, environmental portraits, travel, and everyday carry. The f/2.5 maximum aperture provides excellent low-light performance and shallow depth of field. The STM autofocus motor delivers smooth, quiet focusing for video and stills. At just 28mm long and 167g, it is one of the most compact full-frame AF lenses available. USB-C port for firmware updates. A dedicated lens hood is included.