The origins of cinema, a prize-winning book reveals, are closely linked to the conjurors and spiritualists of the early 20th centuryOver the past few months, I have been on a judging panel with Sir Christopher Frayling and Hugh Hudson for a prize which is not as well known as it deserves to be. This is the Kraszna Krausz best moving image book award, given to the year's most outstanding book on cinema, video art and …