41. By then a chief designer, he decided to design a mirror reflex camera , which materialised as the Edixa miniature reflex. 42. However, the advent of reflex camera technology made rangefinders somewhat obsolete, leaving Leica the leader in a diminishing market segment. 43. Lens technology allowed 120 / 620 cameras to use shorter focal distances, and the twin lens reflex cameras became popular. 44. Twin-lens reflex cameras used a pair of nearly identical lenses, one to form the image and one as a viewfinder. 45. German camera companies were among the first makers of 35mm single-lens reflex cameras _ now the mainstay of the market. 46. Sony entered the market for digital single-lens reflex cameras in 2006 when it acquired the camera business of Konica Minolta. 47. Twin lens reflex cameras use two lenses that are mechanically linked, one for focusing and the other to take the photograph. 48. This allows for greater clearance for other optical or mechanical parts such as the mirror parts in a single-lens reflex camera . 49. Single-lens reflex cameras have to flip up the viewing mirror before the picture is taken, which can also shake the camera. 50. His daughter sat on the glass table, while Feuer lay below the glass, shooting upward with a motor-driven, single-lens reflex camera .
