I am just curious how you meter using incident readings? If you meter in the most highly illuminated areas of the scene you will get under-exposures of 1/2 to to one stop with B&W films with the meter set for the manufactuerer's film speed. If you are really concerned about shadow values double the EI of your film and take the reading in open shadows. (but not in the deepest shadows). Another good solution, perhaps the best one for incident metering with B&W film, is to use the normal ASA value and take two incident readings, one in the shadows, another in the bright part of the scene, and average the two readings. Another option is to halve the film speed and take the reading in the sun but this will not guarantee good shadow detail.
Originally Posted by SteveH