Thanks all, some great info in here. I should have mentioned that I'm shooting with a Leica IIIf using a 5cm Elmar. The options for using a filter are rather slim and expensive, so I've ruled that out for now. I do have a CV 35 as well, so maybe I should just find a 35mm viewfinder so I can use that with filters. I may have to research Microdol-X/Perceptol...etc. I do plan on shooting a few rolls this weekend as we are expecting about 2 feet of snow Friday night, so come Saturday afternoon when the suns out, my scenes will be more than bright!