Colorado’s Best Photographers

He was the first to make use of the phrases “images”, “unfavorable” and “positive”. He had found in 1819 that sodium thiosulphate was a solvent of silver halides, and in 1839 he knowledgeable Talbot that it might be used to “repair” silver-halide-based pictures and make them fully light-fast. The Arab physicist Ibn al-Haytham (965–1040) additionally invented a camera obscura as nicely as the primary true pinhole digital camera. The invention of the digicam has been traced back to the work of Ibn al-Haytham.