Condition: Very minor surface wear. Not tested. Comes with one unopened box of film dated "use before 2/85". Comes with black non-leather carry case. Connection between handles on case to case are torn but not detached. Ask all question or request more pics.Polaroid SX-70 Land Camera SONAR Onestep. w/unopened box of film. Serial No. 5M6Maker Polaroid CorporationType Single-lens reflexProduction 1972 to 1981LensLens 4-element 116 mm f/8 fixed glass[1]Sensor/mediumFilm format SX-70Film size 79mm × 79mm ( 3 1/8" × 3 1/8" )Film speed 160Recording medium Instant filmFilm advance AutomaticFocusingFocus Manual; Automatic (on Sonar models)Battery 6 V Polapulse cell inside film packBody features glass-filled polysulfone (Model 1)ABS (Models 2 & 3)Pictures from the SX-70, by contrast, ejected automatically and developed quickly (fully within 10 minutes[1]) without chemical residue. Polaroid founder Edwin H. Land announced the SX-70 at a company annual meeting in April 1972. On stage, he took out a folded SX-70 from his suit coat pocket and in ten seconds took five pictures, both actions impossible with previous Land Cameras. The company first sold the SX-70 in Miami, Florida in late 1972, and began selling it nationally in fall 1973. Although the high cost of $180[3] for the camera and $6.90 for each film pack of ten pictures ($1,259 and $48, respectively, adjusted for inflation[4]) limited demand, Polaroid sold 700,000 by mid-1974.[2] In 1973–4, the Skylab 3 and 4 astronauts used an SX-70 to photograph a video display screen to be able to compare the Sun's features from one orbit to the next.[5]There were a variety of models beginning in 1972 with the original SX-70, though all shared the same basic design. The first model had a plain focusing screen (the user was expected to be able to see the difference between in- and out-of focus) because Dr. Land wanted to encourage photographers to think they were looking at the subject, rather than through a viewfinder. When many users complained that focusing was difficult, especially in dim light, a split-image rangefinder prism was added. This feature is standard on all later manual focus models.[2]The later Sonar OneStep (introduced in 1978[3]) and SLR 680 models were equipped with a sonar autofocus system. This sonar autofocus system greatly helped the user's ability to focus the camera, especially in dark environments, and could be turned off if manual focus was needed. The Sonar OneStep models were the first autofocus SLRs available to consumers. The later SLR 680/690 models updated the basic design of the Sonar OneStep to more modern standards by incorporating support for newer 600 film cartridges instead of SX-70 cartridges, and a built-in flash instead of the disposable "Flash Bar". Today they are the most evolved forms of the SX-70, and are highly sought after by Polaroid enthusiasts[citation needed].Though expensive, the SX-70 was popular in the 1970s and retains a cult following today.[6] Photographers such as Ansel Adams, Andy Warhol, Helmut Newton, and Walker Evans praised and used the SX-70.[7] Helmut Newton used the camera for fashion shoots.[8] Walker Evans began using the camera in 1973 when he was 70 years old.[9] Not until the $40 Model 1000 OneStep using SX-70 film became the best-selling camera of the 1977 Christmas shopping season, however, did its technology become truly popular.[2] More recently, it was the inspiration for the Belfast alternative band SX-70's name.