Justin is a world expert in: pinhole photography, camera obscuras and light which he has been teaching for over 25 years. He is an Associate Lecturer at Falmouth University and his recent book, 'Discovering Light' was published last year. His past media activities have ranged from Radio 4 'Today', and Blue Peter to the Jonathan Ross Show. He is a director of the Real Photography Company in Bristol where he teaches science and light based workshops.