I have been working with filters for years. Video to be honest. There are four filters necessary for good DV work. A 1a skylight, not a 1b. A #2 diffusion to soften the edges. A circular polarizer to add rich saturation. And a 812 warming filter too improve skin tones. I've been successful in transfering my images to film and even a seasoned pro can't tell what it was shot on. Use these 4, you've got it!