When we are talking about commercial "thick film" from the Good Old Days, just how thick are we talking about. If you can, I would like to know, wet as well as dry thicknesses. When people speak of the old "silver rich" films are they correct? Did these films contain a higher leval of silver than "modern films"? I have been told that they did not.
For" thick" film film, was something added to speed up or, even permit, absorbing of pre-wet and developer?
Like maybe starch?