Review on 📷 Rokinon Black RK21M-E 21mm F1.4 ED AS UMC High Speed Wide Angle Lens for Sony by David West

This is a sharp lens, build quality is good. However, infinity on the focus ring is not infinity. Therefore, you need to adjust and fine-tune the distance even in the landscape or when the distance is more than 2 meters. The focus ring is delicate, making it easy to touch and change, resulting in blurry images. That's the Rokinon problem I have with their otherwise sharp 12mm lens too: infinity somewhere, but not where the focus ring stops. Very annoying. Sony just doesn't have a good 20mm lens. The Sony 20mm is too soft, the Sigma 19mm is unreliable and slow, and the Rokinon is a focus lottery. Apparently some reviewers here got lenses that don't have this problem. Since there are 12mm lenses with terrible chromatic aberrations, others are fine. It is also very annoying that Amazon sends all lenses without protection in large boxes in which they bounce.