Back in the days of film getting the right exposure in the field was a critical step, especially scenes where the dynamic range was greater than the contrast range of film. Scenes such as sunrise and sunset posed a challenge until Singh Ray and the late Galen Rowell pioneered Graduated Neutral Density Filters. These filters allowed photographers to control the dynamic range in a scene by selecting an appropriate filter density for the situation at hand.   A Graduated Neutral Density Filter is darkest at the top of the filter, gradually fades toward the middle, with the bottom half …