1. A printing apparatus comprising: an imaging device that captures an image of an object; and a control unit that controls a discharge amount of droplets of a printing unit that discharges the droplets to form an image, wherein the control unit acquires a captured image of a test pattern formed by the printing unit from the imaging device and controls the discharge amount of the droplets on the basis of a grayscale value of a first region including an outer peripheral edge of the test pattern in the captured image and a grayscale value of a second region within the test pattern.