The Airbrush is great for fine illustrations, concept art, and realistic or stylised work where a polished style and image clarity is key. The tool creates both soft and sharp edges, and its most remarkable characteristic is the ‘clean/cg look’ as well as soft transitions in gradients.
You can build-up colour density, by painting several times over the same spot. This naturally forms a gradient.
For colour gradients, you can repeat the same process over one or more layers if you prefer. This Airbrush naturally layers the colours in a smooth fashion.
By increasing Stroke Jitter you can use the Airbrush to add some grain to your art, as well as emulating skin pores or freckles on a portrait.