OK I am going to show my ignorance here. How does adding ND filters speed the exposure time? I can figure out a way to get them on, that is just a matter of perseverance. My problem is that I don't have the knowledge of filters at all to understand how that will work. Please bear with me in the fact that I am a total amateur with zero photographic education. All I know I have taught myself or learned by reading. Sorry for the stupid part of this question. Magick Michael aka zhounder