Fill and key light with flash

…The light in a photo falls into one of two different categories, fill or key.…Now, I'm not just talking about the light from a flash but any kind of light.…Fill light is light that serves to fill in…shadows to create a more even exposure for example.…Look at the light on this girl's face.…It's completely even and soft.…There are no dark shadows under her eyes, or under her chin.…This was shot in a narrow street where the light was bouncing around so…much that it just created this really nice fill light that wrapped…around everything in the scene and created that even fill that eliminates shadows.…

Yes, there are shadows in the corner of the frame, but…those are the result of the vignette that I added in post-production.…A fill light does not define the subject of the image.…It is simply there to help brighten darker…shadows on the subject, and throughout the scene.…A key light is a light that serves specifically to…illuminate your subject.…Here, a bright shaft of light in an alley is shining directly on my subject.…