worldwide market share in 2008. 1978 Polaroid SX-70 Sonar (USA): first electronic autofocus SLR. Had active ultrasonic sonar echo-location rangefinder AF system. This unique-to-Polaroid AF system had no influence on any other type of AF SLR. Took ten exposure, 3⅛×3⅛ inch frame, Polaroid Time-Zero SX-70 instant film packs."Cameras That See by Sound," p. 62. TIME, Volume 111, Number 19. 8 May 1978. Keppler, "It's the 25th anniversary of an instant classic" pp. 17–18, 20 1978 Asahi Pentax Auto 110 (Japan): first interchangeable lens Pocket Instamatic 110 film system SLR. Mini-35mm SLR-like programmed autoexposure design with good interchangeable lenses and large accessory system."Annual Guide: 46 Top Cameras: Asahi Pentax Auto 110," p. 146. Modern Photography, Volume 42, Number 12; December 1978. Wade, Collector's Guide. pp. 126–127 Was the smallest and lightest SLR ever made – 56×99×45 mm, 185 g with Pentax-110 24mm f/2.8 lens.Norman Goldberg, Michele A. Frank and Norman Rothschild, "Lab Report: Pentax Auto 110," pp. 121–125, 141. Popular Photography, Volume 87 Number 5; May 1980. The Auto 110 and its improved successor, the Pentax Auto 110 Super (Japan) of 1982, were the only interchangeable lens 110 SLRs ever produced and the most advanced 110 cameras ever made, but were unable to prevent the demise of 110 film.Joe McGloin, "Pentax 110 Super" retrieved 18 May 2007 1979 Konica FS-1 (Japan): first SLR with built-in motorized autoloading.Wade, Collector's Guide. pp. 161–162 Also had autowinding (motorized single frame or continuous up to 1.5 frames per second film advance), but not auto-rewind."Annual Guide To 47 Top Cameras: Konica FS-1," p. 98. Modern Photography, Volume 44, Number 12; December 1980. A snapshooter's great dislike (and Kodak bugbear) of 135 film was the need to manually thread the film leader into the camera's take-up spool. Built-in, motorized, automated film-transport systems (auto-load/wind/rewind) arrived with the Canon T70 (Japan) in 1984.Francke, pp. 76–94 Completely automated film handling systems appeared when automatic "DX" film speed setting was added to auto-transport in the Minolta Maxxum 7000 (Japan; see below) in 1985 and became standard in virtually all 35 mm SLRs by the late 1980s. This is, of course, a non-issue in modern digital SLRs. Although Konishiroku has a rich history including several first rank camera innovations, it was never able to establish Konica as a first tier brand and quit the SLR business in 1988.Lea, pp. 121–125 1979 Asahi Pentax ME Super (Japan): first SLR with primarily electronic push