Boffins create 100,000 DPI image:
"Perhaps the world’s most famous repurposed centerfold, the Lena test image, is
now the world’s smallest test image courtesy of researchers in Singapore.
A*STAR (Agency for Science, Technology and Research) boffins have rendered the
image of Lena Söderberg (familiar to computer science students the world over)
at just 50 x 50 microns, with a resolution of around 100,000 DPI."
See:
http://www.theregister.co.uk/2012/08...to_nano_scale/