Today, Waterhouse stops are largely obsolete; most modern photographic lenses are made with an iris diaphragm. Some compact digital cameras use 2-hole diaphragms for limited aperture control.
Today, the practice of using Waterhouse stops has become less prevalent; instead, modern photographic lenses rely on iris diaphragms for controlling aperture. Some compact digital cameras employ 2-hole diaphragms to limit aperture control.