Graduated Neutral Density Filter - Types

Types

The filter comes in many types, basically can be separated in to two categories:

  • Hard edge
  • Soft edge

A hard edge is used when there is an abrupt change in brightness. For example a field with a horizon to a bright sky. A soft edge is a wider smoother change from light to dark. This is used when the light and dark portions are not distinctly separated. For example a mountain and sky. A soft edge filter is less noticeable than a hard edge. It also has the benefit of making the sky more intense, darkening the sky the closer on the top. Below is a picture of what a hard edge and soft edge filter would look like.

  • Soft-edge GND filter

  • Hard-edge GND filter

Read more about this topic:  Graduated Neutral Density Filter

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