The Xpres, designed by J. Stuart and J.W. Hasselkus, was a general purpose fast lens. Unlike the Tessar it has a rear group of three elements. When first introduced the aperture was f4.5, a fast lens for the time, the focal length ranged from 4 ¾ - 12". Later, shorter lenses were introduced and the range extended to 21". In 1925 the f3.5 series was introduced for still and cine in focal lengths up to 10" and in 1927 the f2.9 series appeared. An f1.9 version was introduced in 1929 for cine and small hand cameras. The Wide-Angle Xpres (BP 295519, late 1920s) was a different construction. A process Xpres was also produced.