A projection apparatus including a light source section, a projection section that projects light outputted from the light source section, and a control section that acquires captured image data produced by an imaging section, identifies a region of a projection target contained in the acquired captured image data and an image captured position of the region in the captured image data, determines a projection range over which the projection section projects light and a wavelength band of the light to be projected over the projection range based on the identified region and image captured position, and controls the projection section to cause the projection section to project light in the determined wavelength band over the determined projection range.