For this task, we set up two lights shining onto the model. One light (the fill light) was kept at a steady reading of 4, while the other was (the key light) decreased in between shots to create the ratios.
This photo had a 1:1 ratio, with each light set at 4.
For this photo, the key light was decreased to 3 while the fill light stayed at 4.
For this photo, the key light was decreased to 2 while the fill light stayed at 4.
For this photo, the key light was decreased to 1 while the fill light stayed at 4.
For this photo, the fill light stayed at 4, but the key light was completely off.