Overview

The Pentax FA 21mm f/2.4 Limited is a premium wide-angle prime for full-frame K-mount, praised for its stunning retro design and robust all-metal, weather-sealed build. Optically, it uses special ED elements to minimize chromatic aberration, but performance may be limited by aging camera bodies. The manual focus ring is smooth with minimal breathing, and a built-in hood includes a 67mm filter thread. It suits Pentax enthusiasts seeking a compact, high-quality wide-angle for landscapes, architecture, or street photography, though it's heavier than other Limited lenses.