With three glass lens elements in three groups, it can be used as a wide-angle lens equivalent with a single focallength of 30mm (35mm camera equivalent).
Featuring a powerful high-magnification optical 26X super-telephoto zoom lens, the new PENTAX X-5 provides photographers with a focallength of 4mm-104mm (22.3mm ultra-wide angle to 580mm super telephoto 35mm equivalent).