Overview

The HD Pentax-DA 20-40mm F2.8-4 ED Limited DC WR is the first Limited-series zoom, offering a compact, weather-resistant metal build. Optically, it delivers good sharpness when stopped down, but wide-open corners are soft, especially at 24mm. Chromatic aberration and vignetting are present but correctable. It suits Pentax APS-C users wanting a versatile, premium walk-around zoom with prime-like handling, though it may not match the sharpness of dedicated primes.