Gradient Map (Filter) Definition A filter commonly found in image editors that maps the colors of one layer to a specified gradient according to their lightness.
Levels (Filter) Definition A filter commonly found in image editors that allows you to quickly control the levels of brightness of an image, in particular, it lets quickly make dark gray into black, or light gray into white, or vice-versa.
Drop Shadow (Graphical Effect) Definition A commonly supported graphical effect that when added to an object or layer that casts a shadow under it.
Tutorials: Chromatic Aberration Effect Links Tutorials for creating a chromatic aberration effect in several application.