Hi,
Basically, it's all to do with "misrepresentation" of a product: that is, making it appear to be (or do) something that it isn't. The fact most people will still check to see a product is what it claims to be, before purchase, is not the issue here. it's about the fact that DFS were implying that the furniture was bigger than it really was, by deliberately using specific sized actors, in order to deliberately make the furniture appear bigger than it actually was!
If you see an advert, for a car, and it claims that it had the ability to never skid on black ice, no matter what, and the ad demonstrated this, AND you then purchased this car based on what claims the advert made, and the vehicle failed to do what it said it would, you'd be able to sue for "misrepresentation".
Whilst most people would normally measure the space they have for an item of furniture, and then measure the item in-store to make sure the item would fit, the fact that DFS were deliberately misleading people is taken very seriously by the ASA. It's no different to Internet Broadband ads claiming "10mb download speed", then in miniscule print, they put "Speed will vary depending on your location". If most people who purchase that Internet service, and most of them can realistically only attain speeds of 3mb, then the ad is misrepresenting facts!
The fact that some of you may not care about the fact that DFS got caught out, is fine by me. I was simply posting this issue, because it's the only case where an advert has deliberately manipulated actors to misrepresent something, using CGI effects, in such an underhand way!
Normally, CGI effects are blatant, and it's obvious that if you see something like a car turn into a robot, and go skating on ice, it's fake. But in this case, DFS weren't doing that. They specifically and deliberately photographed real actors in one place, and then superimposed them on another piece of footage of the real furniture, in order to sell their products, but modified the footage of the people to make it appear they were smaller than the furniture, and that the furniture would be bigger than it really was.
It's wrong, and it's immoral!
Pooch