Now, the rods contain a pigment known as rhodopsin. Now, the thing about radopsin is it can actually absorb all the wavelengths of visible light. And that means our rods cannot actually distinguish the different colors. On the other hand, we have three different types of cones, and each one of these different types of cones contains its own unique pigment that can basically absorb its own unique frequency of light, its own unique wavelength of light. And so that means it's the cones and not the rods that are capable of distinguishing and producing the different colors that we actually see. Now, what exactly happens when the photons of light hit our rods and cones?