Hey guys, I'm really needing some help on how to create realistic lighting. For instance, if I cut a zebra from one picture, and put it in the other, how could I make the lighting on the Zebra match the lighting from the other picture? If you know any good tutorial links, it'd be much appreciated if you posted them.
Take a look here for starters, specifically this and this
Lighting a giant elephant by bpkelsey is a great place to start as well as Lighting a giant swan by Shorra.
there are many tutorial on the net regarding these issues. i recomed you go through some of the tutorials on worth http://www.worth1000.com/tutorials but one way to do so is by trying to match the color tones of the original image to the image your adding.in photoshop a fast and easy way to do so is using the color balance and in the end add a colorful layer and soft light it. this will give a uniform color to the whole image.
or there's this