As the term analog indicates, light is recorded as a linear chemical process or electric signal. This can be a reaction in a light-activated chemical compound, such as silver nitrate or silver iodide. In electronics this can also be a photoresistor based on cadmium sulfide, germanium or silicon. In this case the amount of electric current through the device is dependent on the amount of light that shines on it.
Details, the Impossible Project Analog Photography (Posted 2013-08- 22 22:32:20) ; Where to Find Impossible Project Film for Old Polaroid Cameras
Aug 22, 2013; instant gratificationYou can buy Impossible Project film for old Polaroid cameras at about 500 stores in North America, including...