We used the bright, outdoor hallway as a background but wanted to darken it and make it look like evening instead of the middle of the day. We lowered the exposure for the background by -1.5 f-stops using a neutral density filter and added a blue gel to a speedlight on the ground aiming at the hallway. An Octodome with 2 speedlights was used as the main light on her. Tungsten colored Sticky Filters were used on the mainlight and the camera was set to tungsten WB.
