You can also look into Haze filters by Tiffen. Her's the website. http://www.tiffen.com/filters.htm Haze 1 - Reduces excessive blue haze caused by UV light by absorbing 71% of UV. Great all-around UV control. Haze 2A - Absorbs all UV light; reduces haze; maintains color and image clarity. Best for high altitude and marine scenes. I use a Haze 1 and I see difference in my pictures, mostly in the mountains or near the water.