Polaroid (polarizer) Polaroid (polarizer) Polaroid is a type of synthetic plastic sheet which is used as a polarizer or polarizing filter. A trademark of the Polaroid Corporation, the term has since entered common use. The original material, patented in 1929 and further developed in 1932 by Edwin H. Land, consists of many microscopic crystals of iodoquinine sulphate (herapathite) embedded in a transparent nitrocellulose polymer film. The needle-like crystals are aligned during manufacture of the film by stretching or by applying electric or magnetic fields. With the crystals aligned, the sheet is dichroic: it tends to absorb light which is polarized parallel to
Polaroid Land Camera 1000 rigid plastic Pronto, and the OneStep series. With a release price of $40 (), the Land Camera 1000 became the best-selling camera of the 1977 Christmas shopping season. Later, Polaroid released Type 600 integral series cameras, utilizing the same film format and cartridge but with a different film formulation. Polaroid Land Camera 1000 The Land Camera 1000 is an instant camera manufactured by Polaroid Corporation. In the United States, it was marketed as the OneStep. Based on the Polaroid SX-70, the camera includes a one element plastic lens, fixed focus and an exposure compensation dial knob. It uses the SX-70