Ask your lab what developer they use, then consult the film development charts from The Practical Zone System by chris Johnson, which are available online at http://www.chrisjohnsonphotographer.com/charts.shtml, to get an initial EI. (For example, according to the charts in D-76 1+1 HP5+ gives normal contrast at ASA 400 so you would use this as you initial EI if developing in D-76 1+1).
Shoot a roll at this initial EI, then ask the lab to develop normally and print on Grade II paper. Then you can evaluate the resulting prints. If you like the shadow detail, then the EI is right. If there is too little shadow detail, the reduce the EI. Once you've got the shadow detail you want, consider the contrast. If there's too much, pull development or print on a lower paper grade. If too little contrast, push development or print on a higher paper grade.
Last edited by andrew.roos; 11-03-2012 at 04:09 AM. Click to view previous post history.