Overview

The Pentax 18-135mm f/3.5-5.6 WR offers a versatile 7.5x zoom range (27.5-207mm equivalent) in a weather-resistant, well-built package with a silent DC motor and Quick Shift manual override. Optically, it delivers decent central sharpness but soft corners, especially at wide angles and beyond 100mm; chromatic aberration is prominent at the long end. Distortion and vignetting are typical for the class. It suits Pentax users needing a rugged all-in-one zoom for outdoor or travel photography, though its price is relatively high.