Airbrushes and the different options
Single Action or Dual action?
How the trigger function regulates the airflow, or airflow and paint.
A single action brush will only control airflow through the trigger, the paint flow amount is preset. This is a great option for beginners without having to worry about too many controls.
Dual action controls airflow by pressing the trigger while drawing back the trigger releases the paint. Allowing you to be freer with your technique.
External or Internal feed?
The paint is atomised either inside or outside the brush.
Internal feed the paint and air atomise inside the brush giving a more precise, “fine dot” spray pattern. External feed the paint and air atomise outside the brush giving a larger round spray pattern.