Using circular polarizers to get the most of your landscapes

In order to get the deep blue contrasty sky against bright white clouds you're going to want to pick up a circular polarizing filter when you shoot outdoors. Because this filter is most effective when your field of view is perpendicular to the sun, you may be better off removing the filter at midday, but you'll get fantastic results a few hours before, or after, 12 noon. For those of you just getting started, please understand that once you've screwed your filter to your lens, the filter is designed to rotate so that you can orient your filter to achieve the desired amount of polarization depending on the image. Hint: always turn your filter to the right so that you don't accidently unscrew your filter.