Viltrox AF 20mm F2.8 Air Z

Reviewers treat it as a budget lens that does the basics well. The centre is sharp from f/2.8, while the edges and extreme corners need f/5.6 to f/8 to catch up. Barrel distortion and vignetting are strong without correction, and the lens relies on camera or raw-converter profiles to clean them up.

Autofocus is quiet and accurate enough for video and general use, though not as quick as the best first-party primes. Flare resistance is average and sunstars from the seven-blade aperture are acceptable. Most reviewers conclude that the size, weight and price outweigh the optical compromises, particularly on small bodies like the Nikon Zf or Z5.

Owners mostly buy it as a walk-around or vlogging lens for compact bodies and say it barely adds bulk to the camera. The close-focus distance and the low price get frequent praise, and Nikon shooters like having a small AF 20mm well below the price of the NIKKOR Z 20mm f/1.8 S.

Complaints focus on soft corners for landscape work, vignetting at f/2.8 and the plastic-feeling hood. Some users note f/2.8 is limiting for astrophotography compared with faster 20mm lenses.