I'm wondering if it makes sense to spot meter the shadows and adjust exposures and processing based on those numbers, just as you would with conventional B&W photography? I'll be using T-Max 400, with correct adjustments for reciprocity etc. I've been using a Zero Image 6x9 camera with that format. Some of my pictures seem well exposed with little falloff , but others go very dark at one side or the other. I would like to avoid that. Otherwise, what would be the best metering procedure for pinhole?