Simple demo shows the power of a polarizing filter

Here's a neat little demo that you can use to wow your non-photographic friends, or your favorite photo novice. Thirty-five seconds into the polarizing filter intro above, Christopher Frost captures a series of shots with and without a polarizer, and the difference is striking. The video itself is several years old, offering a basic overview of circular polarizers, how they work, and why they're 'so neat.' It's useful for beginners, but the part we enjoyed most was the demo--where frost laps a p...