Based on the original post, I would honestly suggest a little more reading (not online) if the desire is to try a few things with different characteristics, gain a better understanding of the differences, and learn how we can control or alter them (to some extent). Something straight forward like The Film Developing Cookbook might be a good read. A few basics are in order here:
1. Developers fall broadly into two categories - solvent or "fine grain" types, and non-solvent. A solvent developer typically yields finer graininess, while a non-solvent developer typically yields slightly higher sharpness but will tend to accentuate the graininess of the film. However "sharpness" is a relatively complex thing, and difficult to evaluate objectively. Within these two categories there are variations, extremes, and crossovers. The working characteristics of the developer are determined by the types and concentrations of its main components (developing agent(s), alkali "activator", preservative, and restrainer).
2. In some cases a developer can be either solvent and non-solvent. D-76 at stock strength is a fine grain solvent developer. Diluted 1+3 it is effectively a non solvent developer.
3. The working properties/characteristics of essentially all developers are affected to varying degrees by how they are used: dilution, development times, and the frequency of agitation.
4. The type of film is an important consideration. Developers may work a little differently with different films. Further, the image structure characteristics of the final image are determined mostly by the choice of film. The developer affects these characteristics, but cannot alter the basic characteristics of the film. So for example, no ultra-fine grain developer will turn a coarse grained film into a fine grained film.
Last edited by Michael R 1974; 01-21-2013 at 12:36 PM. Click to view previous post history.