Although Derek’s Caravan Camera Obscura had been a great success at events, it proved cumbersome to transport along Cornwall’s narrow and winding roads. With no permanent location available, Derek decided to create a more compact and mobile version—one that could fit in the boot of a car.
Derek’s solution was to design a collapsible tent-based camera obscura. This was housed in an 8-foot- square tent with a lens mounted on top. The image was projected onto a 2-foot-square surface, which could be adjusted up and down depending on the distance of the object in view.