Graduated Neutral Density filters compensate for bright light over half the photo.
Unlike half-color filters, graduated filters have no harsh center line and can be undetectable.
By under-exposing a portion of a scene with neutral density (like the sky), the filter gives a better relief to the surfaces and colors of landscapes and architecure.
They are indispensable in summer, for seaside and mountain photos.
Reviewed by 1 customers
Wasn't expensive, does what is expected, rotates easily. I just wish it would rotate itself when I turn to portrait mode, sometimes I forget and then for a couple shots I've got a density shift left to right ;~)