Viltrox AF 55mm F1.8 EVO FE

Early testing backs up the APO claim: no visible longitudinal CA, no focus shift, and very little lateral CA. Resolution is high across the frame at f/1.8 on a 45MP sensor, the corners are excellent by f/4, and close-up and portrait-distance results are just as strong. In these respects it outperforms some first-party f/1.8 standards that cost considerably more. Vignetting is about 2.3 EV wide open and drops below 1 EV from f/4. Coma is well controlled and clears by f/5.6, and the 9-blade aperture produces clean 18-point sunstars.

The weak points are typical of the class. Bokeh is even and fringe-free but shows some onion-ring texture and cat's-eye shapes toward the edges, so it is busier than the smoothest 50s. Barrel distortion needs a small correction. Flare resistance is good for a Chinese lens but behind the best first-party designs. The STM motor is accurate and quiet but only average in speed, and focus breathing is strong enough to matter for video.

Early owners praise how sharp it is wide open, how little it weighs, and the APO-corrected colour. Several say it is now the lens they use most, or that they went straight from unboxing to a paid portrait shoot. The aperture ring and declick switch are popular at this price.

The complaints repeat what the reviews found. AF speed is fine but not class-leading, the motor can be audible when it hunts, and some owners dislike the feel of the focus-hold button. The A position on the aperture ring has no lock and is easy to knock out of place.