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 type 55 Sheet Film. 1SHOT established a way for 4x5 photographers to shoot Ilford's HP5+, Kodak's TRI-X, TMAX, Portra 160 and 400, and Fujifilm's Velvia 100 as well as New55 FILM's Atomic-X 100 4x5 sheet films -- all in the New55 FILM's special packet system for the legacy Polaroid 545 (545i and 545 Pro) Land Film Holder. Additionally, New55 FILM manufactured and sold its monobath developer called R5 MONOBATH DEVELOPER, a single solution for developing black and white photographic film negatives in 6 minutes in a daylight tank. Polaroid type 55 Polaroid Type 55 film is a black-and-white peel-apart Polaroid film that