Most cameras work out the exposure levels in auto mode when you push your shutter half way down at the same time that they focus. Isolated on white Simple, flat battery icon. Firstly if your camera has manual focusing you might want to try that. The problem with this is that most cameras are so smart that they will light up your subject instead of underexposing it to get a silhouette so you need to trick it. Sell the rights SR-EL 1. Learn more on our Support Center. Create a Free Account.