Hummmm, I seem to have lost a post. I like to shoot fast (400 speed B/W) film. The reasons are as follows:1. Wind is a big issue where I live. 2. I usually shoot the film rated at 200 3. Grain is not an issue with sheet film. 4. Did I mention wind? As Ole said I always have my rig on a tripod and I usually get into the f64 range and that usually gets me 1/8 @f64. I cannot remember when I last used 1/30 of a second.
Your mileage may vary.

lee\c