Picking the right black and white film for outdoor shooting has everything to do with the quality of light outside. If it's a bright sunny day go for a 100 speed film, if it's an overcast day use a 400 speed film, if you are shooting late at night pick something with a 1600 or 3200 film speed. Kodak’s T-Max 100 is a low-speed, tabular film, which will give you the smallest possible grain and the cleanest-looking images.