@djnick
Just a question — why do you call it "HD" when it's a matter of still images and not video? "HD" and "Full HD" are relevant terms in video contexts, not still images, and when it comes to modern desktop monitor resolutions, 1920x1080 isn't really that "high" even...
Worse than that is all those iOS developers calling the iPad versions of their applications "HD" when...
A. They are running at 1024x768 when the minimum horizontal resolution required for HD is 1280 pixels.
B. They are in a 80's style 4:3 aspect ratio when HD is 16:9 by definition.