{HEAD ~ A display apparatus} according to this invention performs control so as to reduce the difference between image data input to a display unit and {TAIL ~ an image} which is displayed on a display surface and acquired by an acquisition unit, based on the image data and the image 
{ HEAD ~ A display apparatus } according to this invention performs control so as to reduce the difference between image data input to a display unit and { TAIL ~ an image } which is displayed on a display surface and acquired by an acquisition unit , based on the image data and the image
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH