I’ll publish some interesting information about a research project where we, amongst other, compared pictures with people, and then the same picture but now without people.
Original pictures copyright Inter IKEA Systems B.V.
Eye-tracking was used to capture the differences. As the picture above shows, much focus is spent on the person in the picture.
But the heat maps, as the overlays with green to red colours, are called, just show the relative difference. There can be a substantial difference between two pictures showing similar heat maps, but I will note the figures of the total amount for each picture.
The picture with the person attracted up to three times more attention in total.