Overview

The Voigtlander 21mm F1.8 Ultron is a solid, fast wide-angle lens offering good image quality at a reasonable price. Optically, it has very low distortion and is sharp in the center wide open, though corners are soft until stopped down to f/4. Vignetting and lateral CA are noticeable but correctable. Build is all-metal with smooth controls, but the lens is larger and heavier than slower 21mm options, with a non-removable hood. It suits photographers wanting a fast 21mm for low-light and unique bokeh, who can accept some size and correctable optical flaws.