All of these pictures show 100 Calories of food. The pictures demonstrate the effect of Calorie density. 400 Calorie food pictures are here
Sources of Calorie density can be found in the references page (scroll to the bottom).
Foods were weighed on my food scale when applicable.
Calculated figures corresponded closely with figures on the back of the package for packaged foods. Foods photographed on the same plate from approximately the same angle.
Foods listed from lowest to highest Calorie density (left to right and top to bottom).