its that time of year again in the south bay area. 80% of the days are perfect weather, but during these days there are no clouds to speak of. when i shoot B&W the main reason I use an orange or red filter is to get separation of clouds and sky. I know there are other benefits to using a filter (and I know I could test it) but if there are no clouds in the sky, would you use a filter? maybe a yellow? or not at all? what say you?