Variable neutral density (ND) filters are handy tools for photographers, in that their opacity can be adjusted simply by rotating them. So, why not use them for adjustable-tint sunglasses? Well, ...

Shooting with a ND filter on your lens is like giving your camera a pair of sunglasses—it cuts light without changing the color balance so you can shoot longer exposures with wider apertures in bright ...

The world of camera filters is complicated and overwhelming. There's acronyms galore, and it's difficult to figure out exactly what each and every kind does. Let's dive into the world of CPL's, ND's, ...