Specular Highlight
Specular Highlight The specular highlight appears on shiny objects. It normally appears on a mirror-like surface. Its appearance is often found on the top of a rounded surface. The incident light hits the object and creates the specular highlight and the light is reflected off the object toward the viewers eye.
Also called catch lights in photography, Without catch lights, “light in the eye” viewers perceive the eye (and thus the bird) to be lifeless.
It takes patience and sunlight, but I like to try and photograph a bird with that touch of catch light on the eye. I think it brightens the eye, even though this Black Swan has such bright eyes even without the spec of light.
Specular Highlight