1. A projection-type display device comprising: an image projection unit which projects an image; an image quality adjustment unit which adjusts image quality of the image to one of plural color modes that enable to set according to an environment at the time of projection; a focus adjustment unit which performs focus adjustment of the image; and a control unit which, in the case of performing the focus adjustment of the image, performs image quality control to set image quality of image projected by the image projection unit to a relatively high-contrast sense color mode of the plural color modes.