what art principle did goya use to paint charles iv and family?

http://www.google.com/search?hl=en&rls=com.microsoft%3Aen-us%3AIE-SearchBox&rlz=1I7SUNA_en&as_q=goya+painting+principal+charles+iv&as_epq=&as_oq=&as_eq=&num=10&lr=&as_filetype=&ft=i&as_sitesearch=&as_qdr=all&as_rights=&as_occt=any&cr=&as_nlo=&as_nhi=&safe=images

It looks as if he was into "realism" to the point of being too stark. Read through some of these links to be sure.