"An instant camera is a camera which uses self-developing film to create a chemically developed print shortly after taking the picture. Polaroid Corporation pioneered (and patented) consumer-friendly instant cameras and film, and were followed by various other manufacturers.
The base of the technology is from a Hungarian chemist, Rott Andor. His invention, direct positive photography, also known as DTR (Diffusion Transfer Reversal) was patented in 1939. With the DTR process, the photographed surface or object immediately appears as a positive, which is an image corresponding to the dark and light shades of the original. When developing the image, the fixer and the developing material are present at the same time, and they immediately interact." - (en.wikipedia.org 29.11.2023)
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