Scan yields a reproduction of the 'Mona Lisa 's ' face magnified 24 times . The image is then scanned again and this time it shows up as an exact replica, with all its features in perfect focus. Engineer suggests faded pigment could explain lack of lashes and brows . SAN FRANCISCO , California ( CNN ) -- A poor attempt to clean the painting could also have erased the features .
Scan yields a reproduction of the 'Mona Lisa 's ' face magnified 24 times . The image is then scanned again and this time it shows up as an exact replica, with all its features in perfect focus. Engineer suggests faded pigment could explain lack of lashes and brows . A poor attempt to clean the painting could also have erased the features .