wow, thanks for the video, that's exactly what i was looking for. so all you need to do is break off a chunk? i figured you'd have to do some sort of exactly measured incision of some sort, so this makes it seem pretty easy.
after reading up on this more, i'm still uncertain if i should go ahead and make a filter notch or not. what do people think? is it better to shoot at 100 and get one stop over exposed - providing the look kodak intended - or is it better to add a notch and get a more accurate exposure??