As useful as lens filters are, many of them are limited to specific genres or styles of photography. But if there’s one filter that supersedes genre boundaries enough that nearly every photographer should try one, it’s the circular polarizing filter.
Circular polarizing filters, or CPLs, allow photographers and videographers to control reflected light, a bit like polarized sun glasses. Turning the CPL’s ring and watching the reflections off water and windows shift feels a bit magical, even though what’s really at work is optical trickery.
