Removing a color cast

Having adjusted the Highlights, Shadows, and Midtones, we can now turn our …attention to removing a color cast. A color cast is a tint of a particular …color, usually unwanted, which evenly affects the photographic image. …The bottom line is, all images have some sort of color cast, and it really needs …to be addressed. In this image here, it looks like maybe …it's a green or a blue, you really can't tell. …So here's a quick way of doing it. You go to the Window menu, select Info, …to open up the Info panel. And what the Info panel does is, it shows …you the value of pixels as you roll over them.…

Now where does this value come from? It comes from the, Eye Dropper tool, and …the 3 by 3 average. If you're going to be identifying a color …cast, make sure that you use the Eye Dropper, and set it to 3 by 3 average. …Now I'm suspecting that blue is the predominate color. …And if I roll over it this pixel here, which is in the midtones, and that's …kind of where you want to look. You'll see that the blue is actually the …