Vintage 1970s Keystone Rapid-Shot 750 Instant Camera. Not tested.
Produced in the 1970s by Keystone (a division of Berkey Photo)
Camera Controls & Features
Distance Setting (Focus): The silver ring around the front lens elements can be rotated to distinct zones (like zone focusing or "guess focusing") marked for different shooting distances.
Flash Switch: The vertical toggle switch on the right side switches between Flash On and Off settings.
Flash Electric Eye: The window beneath the main lens acts as an exposure meter or "electric eye" sensor to adjust internal camera mechanics for available lighting.
Normal Dial: The knob to the lower right allows fine exposure adjustment (similar to Polaroid's lighten/darken control).
Film Compatibility
The camera originally used Polaroid Type 108 (color) and Type 107 (black & white) packfilm, as well as square Type 88 film.
Lens: Features an f/8.8 40mm color-corrected glass lens.
Focusing: Uses "guess focusing" (zone focusing) with manual settings ranging from 3.5 feet to infinity.
Shutter: Electronic shutter with speeds from 10 seconds to 1/500th of a second.
Power: Requires four AAA batteries to operate the electronic shutter and flash controls.
Flash: Compatible with standard flash bars (the same used for SX-70 cameras) and features an "electric eye" for automatic flash control.
Features: It features a "guess focusing" plastic lens, a fixed speed shutter, and a dedicated flash mechanism.
I am selling it as is. Not tested.
Approximate Dimensions and Weight:
7.5" W × 5.75" D × 5.40" H, 1.40 lb