By Luke Walker A polarizing filter is a brilliantly diverse and useful piece of equipment that you can put in front of your lens. It gets rid of reflections, glare and color from things. Let's pretend you have a nice colorful picture that you're thinking of taking. It may be of some cars or bicycles for example. Let's take a look at how you would use a polarizing filter in this situation. A lot of people don't fully understand exactly when they should be using polarize rs. If the sun is behind you. In this situation the polarize won't have any effect at all. Also, if you're shooting into the sun, the polarize r will have no effect at all. The sunlight has to be coming from the side, ideally at a right angle to your subject. With a polarize you twist it to see the effect. You will easily notice it begin to roll around the image, darkening the sky behind it. It will make a bright blue sky look a deeper shade of blue as well as taking the reflections o...