People who use Lomo or Leica or Holga or any camera type in Lomography world should know Cross Processing. It’s a procedure of deliberately processing photographic film in a chemical solution intended for a different type of film *.
Cross-processing produces very distinctive results. Images printed using these techniques will generally have a very high contrast, [...]

HDR (High Dynamic Range) is a set of techniques that allows a greater dynamic range of exposures (the range of values between light and dark areas) than normal digital imaging techniques. The intention of HDR is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to shadows. [...]