In this example essentially only the exposure of the paper need be adjusted and the ISO/EI can be allowed vary from frame to frame. Using ISO/EI as a primary adjustment allows a very different way of shooting than Adams used and taught. Yes the technical look of the print may change with the change in exposure but, the creative use; the ability to maintain a given DOF and given amount of motion blur across a range of EV's is very freeing.
CHOOSING THE RIGHT FILM SPEED FOR THE JOB
Best overall quality EI 400/27
Finer grain (with easy printing) EI 200/24
Finest grain (but with denser negatives) EI 50/18
No matter which film speed is chosen, standard C41 processing is recommended.