Driving to a mall today, my wife handed me a pair of old sunglasses. I'd forgotten mine and am clueless where these came from, but they had to have been purchased at least ten years. To my near astonishment, this pair of sunglasses had polarized lenses, cheap as they were, which just punched up some of the cloud formations today enormously. In fact, some of the clouds were nothing short of spectacular, made especially so by the glasses. Soooooooo, I got to wondering, and do not know the answer, about CPs for dSLRS. Do they make any sense? Does anyone here use a CP on their dSLR? If so, what brand and model? Any input greatly appreciated. Thanks!