Wet photography: what's the second choice after silver halide?
All the film photography I know of - both colour and black-and-white - uses silver halide as the photosensitive component. I suppose that after over a hundred years of wet photography we have a good understanding of the options. But, if for some reason silver halides could not be used for film photography, what would the second (or third) choice be? How does it differ? Are/were the alternative options actually in use - and if so, what for?
silver Bromide and silver iodide are 2 other types. of light gathering compounds. The problem with these is they are most often used with glass plates.. While it uses a form of silver halide Infra red film is available but requires a special. filter and developer.
