A regular contributor to Dive magazine, Charles will be letting us into his secrets on underwater photography in low vis conditions - something we are all used to! His presentation, titled "Deep, Dark & Horrible Photography", will be illustrated by photographs of the wrecks in Scapa Flow, Norway and Croatia and will cover topics such as how to take photographs in cool waters when conditions may not be perfect; different approaches you can take, techniques to get the most out of challenging conditions with tips on lighting and camera settings.  Aimed at all levels of snapper from the relative beginner to the experience professional, this will be an interesting insight into the world below the waves.