Today, November 23, in the New York Times, Circuits by David Pogue, he said “Pixels Are Like Cupcakes”. Cute, and a good analogy that a digital photo sensor chip is like a sheet that cupcakes are baked in, and that each cupcake holder is like an R, G, or B sensor site, but rather than cake dough it gathers light focused on it by the camera lens. Then he goes on to argue that the size of the cupcake or sensor site is determined by the overall physical size of the sensor chip and the number of megapixels it has. Further he argues that as the number of megapixels is increased for a given sensor area size, the smaller the size of each sensor must be, so it gathers less light and therefore functions less effectively.