Shooting photos at dusk can be tricky, but understanding a few things about lighting will give your images depth and a 3-dimensional quality. The main goal is to bring the brightness of your subjects in the foreground close to the brightness of the background. This is best accomplished by using a dedicated strobe, since they are able to output high-level light from a small, portable package. Step 1: Set Your Background Exposure. It’s best to use the manual exposure settings on your camera because any auto modes will attempt to balance the lightest and darkest areas of the image. Meter off the brighter part of the scene and leave the shutter set. Start with an ISO of 400. Step 2: Add light to your subjects.