The Queen of all Polaroid cameras: The SX-70. The SX-70 was the first viewfinder camera and the breakthrough for Polaroid in it's prime. Professional in it's approach and beautiful in it's design it is without a doubt, the best of the best.
The Sonar version was released a few years after the original SX-70, and features Polaroid's patented Sonar Autofocus, which allows you to make perfectly-focused instant photos every time.
Original, refurbished Polaroid™ SX-70 Sonar camera
Professional folding SLR instant camera with sonar autofocus
Lens: 4-element 116mm f/8 glass lens
Shutter: Automatic variable speed/aperture shutter system
Focusing: Manual via geared wheel, autofocus via sonar system
Exposure times: Shutter speeds from >5 sec to 1/180