Barry...you are completely correct. Don't over look the fact that the expodev program DOES allow you to enter your reading into zones...open the program and look on the first page where you enter the holder number. Tap on Zone, and on the next page you will enter your readings for the high and low EV...BUT...when entering the EV then enter the zone that you envision the reading to be on. So, if your low EV reading is on Zone 4, enter the number 4 where it says "Low zone", and the actual EV reading where the low Ev is usually entered. Similarly, enter the data for the hi Ev and Hi Zone. You have then placed your readings on the zones that you have visualized, and the program will then give you the SBR, etc. for the parameters you have entered. If you desire to meter another are in the scene in order to see where that area falls, then simply meter the area and enter the Ev reading into the Test EV box and viola...you will know exactly where that subject falls. By the way, the Expodev program will NOT know if you decide to use the meter as a spot meter rather then an incident meter. For example, you feel more comfortable seeing some area of shade and metering by "reflection"....fine, just point the meter ( now set to read as a spot meter ) at the area you want to have at zone 3 or 4, and enter the reading in EV values...you have now placed the shadows where you want them. Then meter a high-light value ( as correctly noted by Phil one always exposes for the shadows ), and enter the value and the zone that you envision the value to fall upon. The expodev program will function as usual, and will provide the SBR and time of development based upon your film curves, but you will have have entered EV values obtained by using the spot function of your meter rather then the incident function.
If not clear let me know.
Ed