![Example of photo taken without polarizer](/files/2012/05/c_colinobrien.com_2011_7300242-150x114.jpg)
Of course, I’ve always known that you can use a polarizer to darken the sky. When you are at right angles to the sun. And I knew something of how they could reduce reflections, as in windows or ponds. But I had never taken that to heart and thought »