The legibility from our fill light doesn't call attention to itself. It just makes your other light look that much better. It introduces a balance; a range; a relationship between the two lights.

Think of it like a backup band behind a soloist: the band is there to fill in the gaps, add background and make the soloist sound even better. Fill light is the music machine to your drunken karaoke key light.

So just like we did in Lighting 101, lets take a walk around the block and explore some lighting angles. For consistency, we are going to keep the same key light source for every photo on this page. So it is just about the lighting angles — i.e., no other variables.Read more »

http://strobist.blogspot.com/2016/07/lighting-102-angle.html