The Pentax MX-1 features a 4x optical zoom lens with a focal length range from 28 to 112 mm in the 35 mm format. Landscape images can be taken just as well as portraits or snapshots. The housing is coated with a textured rubber surface, and its top and bottom are fashioned from chrome-plated brass, which develops a characteristic patina over time. The lens ring is also crafted from metal.