I am shooting a wedding for a family friend, and one of the shots she would like is of them both standing on a balcony over a stairway. It's an old building they're getting married in, and it is a beautiful idea for a photo. I took a test shot and the room and stairs are covered in dark wood, making the light terrible!
The idea is I will be down below, looking up at them to take the photo, so a flash would be useless. Is it just a matter of asking them to stay as still as possible, use my fastest lens, slow down the shutter and turn up the ISO if necessary as well? Or is there something I haven't thought of.