Roll film of Peter's camera. David Henderson Houston (born June 14, 1841; died May 6, 1906), originally from Cambria, Wisconsin, patented the first holders for flexible roll film. Houston moved to Hunter in Dakota Territory in 1880. He was issued an 1881 patent for a roll film holder which he licensed to George Eastman (it was used in Eastman's Kodak 1888 box camera). Houston sold the patent (and an 1886 revision) outright to Eastman for $5000 in 1889. Houston continued developing the camera, creating 21 patents for cameras or camera parts between 1881 and 1902. In 1912 his estate transferred the remainder
Kodak Stereo Camera positive clicks labeled 3.5, 4, (black dot), 5.6, (red dot), 8, 11, 16, 22. The red dot indicated f 6.3. These exposure suggestions are based on ASA 10 (not 100!) film which in 1954 was still the standard film for color slides just as it had been when the Realist was introduced. The recommended setting for bright sun was a shutter speed of 1/50th with an aperture of f 6.3. Focusing on the Kodak stereo camera is done by turning a dial located on the lens mount. The two dials are ganged so that they focus together and they can