Variable neutral density (ND) filters are handy tools for photographers, in that their opacity can be adjusted simply by ...

Transitions lenses are clear indoors and at night and get as dark as sunglasses outdoors, reducing glare, eyestrain and fatigue. They also block 100 percent of harmful U.V. rays, to help protect the ...

You can buy them from Ombraz as non-prescription sunglasses with premium lenses. However ... come in nine popular shapes -- ...