A good landscape photographer is always well prepared. Don't leave home without these ten items. A graduated filter will allow you to even up the lighting between the sky and the ground. When the ground is covered with snow or ice, put the dark area at the bottom. At all other times, put it to the top. A polarizing filter will reduce reflections on glass or water (but not polished metal) and will make the sky bluer without affecting other colors. The effect is most pronounced at 90 degrees to the sun.