The Kodak Signet 80 was the last and most sophisticated camera in Kodak's Signet line. It is an interchangeable lens 35 mm rangefinder camera produced from 1958 to 1962 by Kodak in the USA.
Specifications from manual
FILM
FILM LOAD-Kodak 135, 20 or 36-exposure magazines
NEGATIVE SIZE-24mm x 36mm
LENSES are removable as a complete unit to substitute wide-angle or telephoto lens.
50mm, f/2.8 Kodak Ektanar, Lumenized. Standard Lens. LENS OPENINGS-Marked in EVS - 5 to 17, as well as f/numbers - 2.8 to 22. Uses Series 5 filters.
35mm, f/2.8 Kodak Ektanar, Lumenized. Wide Angle Lens LENS OPENINGS-Marked in EVS - 5 to 17, as well as f/numbers - 2.8 to 22. Uses Series 5 filters.
90mm, f/4.0 Kodak Ektanar, Lumenized. Telephoto Lens LENS OPENINGS-Marked in EVS - 6 to 17, as well as f/numbers - 4.0 to 22. Uses Series 5 filters.
RELEASE - Plunger-type-with cable release socket located on right top of camera.
FLASH - Built-in synchronization for class F, M, and electronic flash. Flash receptacles on camera body accept Kodalite Super-M 40 Flasholder, Kodak Rotary Flasholder, Type 1, and Kodak Generator Flasholder, Type 1. Accessory shoe and PC socket for electronic and other flashes.