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
Instant camera 86mm x 72mm photographs and is the "world's first dual-format, glass lensed instant camera". As noted above, Polaroid Originals (previously the Impossible Project) produces instant film for Polaroid cameras. In spring 2016, as Impossible Project they released their own instant camera, the Impossible I-1 that uses the company's 600-type and I-Type films. In September 2017, now renamed Polaroid Originals, it announced the Polaroid OneStep 2 that also uses its 600-type and I-Type films. In 2015, MiNT Camera released the InstantFlex TL70, a vintage twin-lens reflex-looking instant camera that uses Fuji Instax Mini film instead of SX-70 film. In 2016, it