Diaphragm (optics) 1889 "Dictionary of Photography" (see figure), but disappeared after Ernst Abbe's theory of stops unified these concepts. According to Rudolf Kingslake, the inventor of the iris diaphragm is unknown. Others credit Joseph Nicéphore Niépce for this device, around 1820. Mr. J. H. Brown, a member of the Royal Microscopical Society, appears to have invented a popular improved iris diaphragm by 1867. Kingslake has more definite histories for some other diaphragm types, such as M. Noton's adjustable "cat eye" diaphragm of two sliding squares in 1856, and the Waterhouse stops of John Waterhouse in 1858. Diaphragm (optics) In optics, a diaphragm
The Crooked Eye The Crooked Eye The Crooked Eye is a 20-minute drama film short adapted, directed and edited by D. C. Douglas. It is based on the short story of the same name by Betty Malicoat. In 2009 the film won for "Best Animated Short" at the Red Rock Film Festival in Utah. "The Crooked Eye" follows a quiet woman through her daily drudgery while persistent memories of a recently unraveled marriage dreamily connect the guilty moments that made her world so unreal and unreliable. Linda Hunt ... Sharon's Narrator <br>Fay Masterson ... Sharon <br> Katherine Boecher ... Rosemary <br> D. C.