ImageGear .NET v25.0 - Updated
High Density Range Effect
User Guide > How to Work with... > Image Processing and Cleanup > Advanced Image Processing and Correction > Image Effects > High Density Range Effect

The HighDensityRangeEffect Method increases contrast separately in shadow, highlight and midtone areas, imitating the human eye's ability to adapt for light conditions at the point of interest.

Original Image Image with High Density Range Effect