I got some free Delta 400 film with a magazine today and thought I'd try it out tomorrow. Now I've never used B&W film before so a few questions. I heard that using exposure compensation at around -1/2 will give me darker slightly more dramatic images. True? I've got an orange filter lying around. What does this do, and would I benefit from using it while photographing durham cathedral? I've heard that exposure compensation is necesarry when using a filter, as less light gets throug. Won't the meter compensate for this?