Tiffen 4x5.65" Graduated ND 0.9 Glass Filter, Hard Edge, Vertical Orientation

The Tiffen 4 x 5.65" Graduated Neutral Density (ND) ND 0.9 Water White Glass Filter enables the shooter to adjust exposure without affecting color balance. Neutral density filter is available in 1, 2, 3, or 4 stops to suit individual situations.Often it is necessary or desirable to balance the light intensity in one part of a scene with another. This is especially true in situations where you don't have total light control, as in bright contrast landscapes. Exposing for the foreground will produce a washed-out, over-exposed sky while exposing for the sky will leave the foreground dark and under-exposed. This filter enables cloud detail to be kept correctly exposed in the picture.Determining which graduated neutral density filter yields ideal results for any given lighting situation takes knowledge, experience and a collection of such filters. Choose the filter strength which adjusts the lighting to stay within the exposure latitude (greatest difference between bright/dark values) which still shows details in both of the digital or film medium in use.Speaking generally, the 2-stop value (ND 0.6 - the filter's clear portion allows 4x more light to pass vs. darkest portion) effectively compensates average bright sky-to-foreground situations and the soft transition is applicable more often to a scene than the hard transition. The Hard label indicates the degree of color graduation. The Vertical indicates the direction of the graduation.