I lit these pictures naturally with one big light source to emulate a large window... I normally light my portraits individually to suit each sitter (matching the light and shadow to their personalities). But since these pictures were shot as a set, I had to make sure that the lighting matched. So I took extra care in showing as much individuality in each shot, through my subjects personalities as well as through their body language. I believe I was able to capture an essence of each couple in all of the pictures.
-- Shot with a Canon 7D and Canon 24-70mm L f/2.8 lens.