Laowa 15mm f/2 FE Zero-D

Tests show a sharp centre from f/2, with soft outer field and weak corners at f/2 to f/2.8 that become good at f/5.6 to f/8. Distortion is very low for the class, and lateral colour fringing is modest and easy to remove.

The weak points are vignetting of over 3 EV wide open that remains visible at f/8, coma in the corners at f/2 that clears up by f/4, and ghosting with strong light near the frame corners. With no electronic contacts, there is no in-camera correction or EXIF.

Owners like the combination of speed, low distortion and a normal screw-in filter thread, and many use it for astro, real estate and vlogging-style video with the de-clicked aperture. The build and smooth focus ring are well regarded.

Common complaints are the heavy vignetting, corner softness wide open for star fields, and the lack of EXIF. Owners have also noticed that blade count changed during production, with earlier and later units producing different sunstars.