Wetpixel Live: ISO Guide for Underwater Photographers
Traditionally, photography textbooks concentrated on aperture and shutter speed as being the most important ways to control exposure. Modern digital cameras offer another option, namely ISO. For underwater photographers, often shooting in quite low light levels and trying to balance flash and natural light, ISO offers an excellent tool to help control the way we capture light underwater. Adam and Alex discuss the newer camera technology that allows this and how they use it when shooting.