Quote Originally Posted by cliveh View Post
I agree with artonpaper about this. I can understand the importance of silver gelatin, but many processes were used prior to it's existance and optimisation, to make very valid and beautiful images.
Again, yes and no. For example, Pt/Pd would be difficult to use to make negatives. And collodion, although useful to make negatives, is not useful to capture moving images.

I am not saying that silver gelatin is the be all and end all, but merely that it is an important part of photography and it is being lost. The formulas for cyanotype and Pt/Pd are out there in abundance, but there are very few silver gelatin emulsion formulas out there that are correct or that are useful. And, virtually no one is making a concerted effort at teaching how to make and coat them.