These guys bought a whole bunch of fast food items, took photographs of them, and then compared them to the photographs of the same items in ads.
A reader over at boingboing has this to say:
I worked (briefly) in the photogoraphy studio of one of the biggest ad agencies in NYC. They paid a professional “food stylist” around $2000 a day to make the food look like that. Every golden sesame seed or drop of crystaline dew was hand placed. That maoynaise isn’t mayo, it’s hair gel and that chicken looks so good because aparently everything looks yummier when it’s been sprayed with laquer. A lot of that “food” isn’t food at all and the stuff that is food has been treated with more chemicals and “tricks of the trade” than most super models.