1978 advert for the Polaroid 1000 .

The Polaroid Land Camera 1000 is a consumer camera line using SX-70 integral film. There were several models:

• Fixed focus – known (in the U.S.) as OneStep
• Zone-focused – known (in the U.S.) as Pronto! ; e.g. Pronto RF
• Sonar Autofocus – Labeled as both Pronto! and OneStep models, usually with an AF or Sonar designation

info gleaned from Wikipedia