aleksandr_soloviov

Before exposure or after exposure, apply the solution with a brush or spray gun and after development in these places there will be a black or gray glare effect depending on the concentration of the solution

I am talking about a chemical method of "exposure" where you treat the paper and it develops black in those areas

What needs to be applied to photographic paper so that after development there would be black in these places, in short, you need to make a black frame or black blots and spots on the image using a non-optical method.