We also recommend the fantastic 'In the Dark', a short illustration book by Nigel Peake.
Made of Light - the Art of Light and Architecture explores our illuminated world in a way that is both affecting and thought-provoking. Rather than addressing quantitive criteria, this book deliberately focuses on qualitative, ephemeral and abstract considerations and shows them to be an essential part of the relationship between light and built form.
Made of Light is not intended to prescribe an approach; rather, it attempts to recognise that while we have our own, individual, subjective perception of light, there is also a dialogue to be had, through which this most exciting but elusive medium might be explored.