I promised I’d show the difference between a toned and an untoned image. Please keep in mind that the untoned and toned images are slightly different prints so there’s a difference there as well, albeit very small. You can see the coloration and the -coming-to-life of the image. Both images were printed on Rollei Vintage paper 131, developer in Rollei Lith developer 1+1+24 and the toned images are on the left and toned in Selenium 1+4 at approx. 20 degrees.
Photography Contrastique - Alternative Photographic Processes 