This week Britt Hogg and I worked in #UofSC_SJMC’s photo studio tweaking the hair light location. Our test images demonstrate how you can use your exposure to control your background. In the first photo, the room is well lit. But in the second photo with a wide open aperture, fast shutter speed and low ISO, the overhead light is so underexposed, it’s insignificant. Only the strobe light is strong enough to show up.
This technique can be useful in several ways. In the case demonstrated, we needed the overhead light in order to focus the camera. No need to turn off lights to take the photo.
In this case, we turned a grey background to black. But you can turn any background black, as long as you don’t throw any light on it.