The optical system of the Stemi 2000 gives brilliantly sharp images, free of distortions, with high resolving power. The extremely wide 7.7:1 zoom range (pancratic system 0.65x to 5.0x) zooms in continuously or with click stop. The Stemi 2000 provides ample space for illumination and manipulation, and interchangeable optics ensure functional application at varying distances, with a range of magnifications. The basic outfit provides an object field size of 35mm, with an 0.3x attachment lens system permitting object fields of up to 118mm to be viewed.